So we could argue that drivers are subsidizing the cost of mostly unused handicapped parking spaces as well. I'll see a parking lot with dozens of these spaces almost chronically unused, but since the ADA requires a certain (arbitrary) number of handicapped spots, businesses are forced to build an excess capacity of these spots despite many of them sitting unused, except occasionally by the Jaguar owner who is friends with a doctor.
A strange thing is that you have handicapped parking requirements yet the NYC subway is still not even close to being Accessible for those in wheelchairs. A suburban Target is required to have something like 90 handicapped spaces (obviously I'm exaggerating,) but the NYC subway still has huge swatches of stations that are accessible only by stairs. How NYC gets away with this is beyond me -- they can force businesses to bend over backwards to accommodate the disabled, but they themselves don't do much of anything to improve the public transportation situation for the disabled. (or even moms with strollers and kids.)
If anyone wants to know why public transportation isn't a bigger thing for families -- it's because going to a grocery store with a kid(s) in a stroller via the subway is a nightmare. -- not even talking about carrying your purchases home. Buying a weeks worth of groceries and then carrying all that home on a crowded bus or train with a kid in tow? No thanks.