I'm off the phone now. Let's taste a sample of free market enthusiasts inveighing against zoning. These are just some of the ones that were easy to find:

American Enterprise Institute ("a public policy think tank dedicated to defending human dignity, expanding human potential, and building a freer and safer world. The work of our scholars and staff advances ideas rooted in our belief in democracy, free enterprise ...")

https://www.aei.org/op-eds/to-solve-the-problem-of-unafforda... (Dec 2019): "To solve the problem of unaffordable entry-level housing, abolish single-family zoning. Allowing 2-, 3- and 4-family structures amid single-family homes could add 10% to today’s housing stock"

https://www.aei.org/economics/a-different-take-on-americas-h... (2018): "Demand is too high, supply is too low, therefore role back regulations on land-use and zoning and allow the market to work. As Fisher put it, if cities start “allowing townhomes and duplexes and places that were originally single-family homes to be redeveloped into 20 unit buildings, I think you would see the market take care of itself."

https://www.aei.org/research-products/report/a-plea-for-beau... (2012): "Zoning contributes to the dereliction of the city when its local industries die and ensures that the central areas are not places of renewal, but at best museums and at worst vandalized spaces no one can use. In successful cities like Paris, New York, and Rome, workshops, apartments, offices, schools, churches, and theaters all stand side by side, with houses borrowing walls from whatever building has a boundary to spare."

Let's go over to Reason, a little more strident with their opinions. Their magazine bears the slogan, "free minds and free markets". And let us see how long they have opposed it. Looks like they've done so since... NINTEEN SEVENTY SIX. I was not alive in 1976. My parents were alive, but not old enough to vote. So let's take a look at the legacy our grandfathers' generation has left us.

https://reason.com/1976/01/01/the-case-against-land-use-plan...
"WHO LOSES? The results of land use legislation will be particularly harmful to the less well-to-do, since they are least able to cope with higher prices."

"Section 509(d) provides that nothing in the Act shall be construed to "enhance or diminish the rights of owners of property as provided by the Constitution of the U.S. and the constitution and laws of the states in which the property is located." For Howard Hughes that may be comforting. But for the small landowner it is close to meaningless. No matter how wicked and confiscatory a regulation is, a bolt from heaven will not strike it dead. It can only be declared unconstitutional by a court of law, and this means that an owner must be in a position to use costly and lengthy court processes to sue for such a ruling. The situation faced by affluent owners would be entirely different from that of the less affluent."

They lost that round pretty badly, though. Within a decade the magazine had moved from forecasting the inevitable consequences to documenting them.

https://reason.com/1986/02/01/zoning-revolutionary/ "Zoning contributes to housing shortages and holds down commercial development; it adds paperwork and years and political shenanigans to land-use changes; and, ominously, it is used to exclude "undesirables.""

https://reason.com/1990/10/01/zoning/ "As zoning laws continue to keep the dream of affordable housing just that, a dream, one usually apolitical group is calling for a change. Habitat for Humanity International says zoning laws, along with prohibitive development fees, often undermine its nonprofit efforts to build "simple, decent" housing for the nation's poor."

https://reason.com/2013/05/07/zoning-kills-affordable-housin... "Zoning Kills Affordable Housing: How established homeowners use regulations to stop new low-cost homes." (Book review)

https://reason.com/2014/11/16/washingtons-beautiful-illegal/ "Washington's Beautiful, Illegal Tiny Houses: Architectural minimalism runs afoul of outdated regulations in the nation's capital."

https://reason.com/2015/07/26/zoning-out-the-poor/ "Zoning out the poor". In case you thought libertarians and free markets were all about pooh-poohing the poor.

https://reason.com/2017/05/25/residential-zoning-in-new-york... "Zoning Laws in New York, San Francisco, and San Jose Cut Americans' Wages by $8,775 / And they've made the U.S. economy 9 percent smaller than it would it otherwise be."

https://reason.com/2018/08/14/ben-carson-calls-out-zoning-re... "Ben Carson Calls Out Zoning Regulations for Driving Up Housing Costs: The HUD Secretary wants to revise Obama-era housing regulations he says do too little to address the real drivers of housing costs."

https://reason.com/2018/12/10/progressive-minneapolis-just-p... "Progressive Minneapolis Just Passed One of the Most Deregulatory Housing Reforms in the Country: Urban liberals are won over to libertarian policies, if not libertarian politics."

https://reason.com/2019/02/08/zoning-makes-the-green-new-dea... "Zoning Makes the Green New Deal Impossible: A bad idea is made worse by its inability to grapple with local land use restrictions."

https://reason.com/2020/04/18/cant-afford-your-rent-blame-he... "Can't Afford Your Rent? Blame Herbert Hoover. The feds pushed cities to implement zoning restrictions. High prices and social inequality were the inevitable results."

https://reason.com/2020/07/02/empowered-by-excessive-regulat... "Zoning and other municipal regulations give busybodies a license to harass people they don't like and force others to conform to subjective standards as they see fit."

That last one was literally posted yesterday, just to show you that they're still doing it.

Oh, and one more classic, just to consider it in light of current events: https://reason.com/1984/10/01/telecommuting-will-the-plug-be...
"Telecommuting: Will the Plug be Pulled? ... The prospect of such a dramatic increase [in telecommuting] has not been universally welcomed."

""Those of us who plop down our Apples in the office at home or in the rec room are probably not in any danger of violating any local ordinances," commented former Labor Department assistant secretary Donald Elisburg recently. "But if the work stations spread and it becomes popular, there may be more consideration of local zoning laws as to whether such installations are permitted.""

"Yes, zoning laws. In general, local zoning laws already regulate any work done in the home in some manner and often require home businesses to obtain permits. Thus far, such laws have rarely been used against telecommuters. Chicago is an exception. Its city code stipulates that except for certain professionals, who may use their residences for "consultation, emergency treatment, or performance of religious rites," all home work is taboo when it involves the "installation or use of any mechanical or electrical equipment customarily incident to the practice of any such professions. [...] "The law is one of the nation's most restrictive," [Professor William Toner] told me. "It's structured so that there's a good chance it would be illegal for Saul Bellow to write a Nobel Prize–winning novel at home.""