Realistically, the tax payer that doesn’t drive in Chicago is likely a fiscal drain. Which is ok, but it’s silly to pretend that folks who drive are being subsidized by folks who don’t, outside of maybe a small number of upper income taxpayers in NYC.
I would argue that subsidizing driving is a net negative for the city. Cheaper parking means more cars. This means more traffic and more pollution. Normally subsidies funded by tax dollars are for net positives. A fire department existing in the city is a net benefit, even if I don't personally have a house fire.
I get that perspective, though I am a bit more cynical about the ability of cities to transform. It's either cars or nothing, it's have decent parking availability downtown or let the city center die, in many places. Buses are shit, and light rail won't catch on until after the Collapse in most places.