They might be persuaded to participate if they had a reasonable hope that the money-driven system might be fixed. Then they realize that the only people in a position to fix it are politicians, and they quickly tune out again. Not much is likely to be done about the system of financing political campaigns anytime soon because the official line out of the U.S. Supreme Court for the past quarter century is that you can't really restrict money in political campaigns because money is speech . And speech, thanks to the First Amendment, can't be restricted. But anyone with a lick of sense knows that money is money.
Money is property.
Speech is speech. When you walk down the street carrying a placard saying Our Senator's Mama Wears Army Boots, that is speech. Probably not what the Founders had in mind. Every time politicians have done something to clean up the system, they have followed it up by inventing a way around it. The presidential campaign this year is a classic example.