>Why not give people a means to participate?

Sounds great. How? Show how you can provide everyone the means to participate and doesn't just raise the bottom line on the cost to participate, returning to the normal equilibrium that you'd expect from a market where there are always those who are priced out. How does it avoid the pitfalls of things like UBI?

>Non-sequitur

A non-sequitur would be talking about the reproductive life of penguins. "Inconceivable!" The concept of "you're free to choose" always sounds great but glosses over reality: choosing schools is not like choosing apples in the grocery store. Choice comes with cost, and the costs of attending different schools can be enormous. Not all schools are right outside your door. Since socioeconomic groups are frequently geographically concentrated (sides of the town/tracks), you'll end up with terrible schools in poor neighborhoods and good schools in good neighborhoods far away. Sounds like what we currently have, right? How does a "market" improve on this situation? It would seem that it provides incentives for schools to work against integrating student populations. Schools are disincentivized from enrolling poor kids, because poor kids are much less likely to perform well. A rational school will do everything legally possible to avoid accepting kids from populations statistically less likely to perform well in school.

So maybe you try to solve that problem with regulation? Schools are... what, required to do all acceptance via random lottery if they want to be eligible for payment through federal vouchers so they can't discriminate against poor applicants? Well, now school-choice isn't much of a choice anymore, it it? Maybe you have better suggestions on ways to force a rational, privately run school to accept kids they don't want to accept.

> We already have this entity.

I'm tired of people wanting all the benefits of "markets" for themselves and hand-waiving all the problems away back to the government. The public school system cannot exist in its current capacity if there is a massive shift to school privatization. So no, you can't just assume it will exist, you have to support your case with how you think it will function, and how it will be more likely to provide better outcomes than the current system.

Fundamentally, you have to be able to justify the merits of your proposal in real terms, and not in terms of "markets make everything better." Markets are awesome, and for so many of the goods and services in life, using and acquiring them through a free market with good competition to establish true market prices is really optimal. But market's are not a panacea. Roads do not work well in a universally private market. If every user of a road had to deal with transaction costs for every road they used during the day it would be a nightmare. The entire society is better off when people are free to move around. The federal/state ownership of roads funded by taxes is part of what makes the entire economic market work. Education, I believe, is the same: when everybody has access to education, funded by taxes, the entire economy is better off. Privatization will only lead to worse disparity for the vast majority who cannot afford to participate.

The current ecosystem is more like road vs air travel. You can go across the country by car, on public roads. Nobody will stop you. But if you want a better/faster experience, you can pay private companies for that service, but in so doing, you do not get a tax rebate for the road you didn't use. Private schools are great - It's all I've ever been to - but attending a private school should not free you from supporting the system that is universally beneficial.

We have major problems in our current school ecosystem, yes. And they do resemble many of the problems that a market-based system would have: the "best schools" are full of wealthy kids. But unlike a market system where this that outcome is optimal, it's a secondary effect of the residential clustering of socioeconomic strata, AND the reality that the quality of the school is driven less by the quality of its teachers and administration, but the quality of it's students. Student performance is most strongly tied to factors related to the poverty/wealth. So instead of trying to tread the symptom, we need to address the cause: poverty, and poor social mobility.