That assumes that the lack of appeal of buses has anything to do with money. Until buses can:

* Deliver me from point A to point G without stopping at B, C, D, E, and F along the way

* Provide room for more than a handful of cargo/luggage and park / wait around while I load/unload it

* Actually stick to a goddamn timetable (looking at you, Muni)

Then no amount of money will make buses more appealing to me than a car.

Trains have these same problems, minus the inconsistent timetables, and have the added benefit of typically going at least a little bit faster.