In college I was taught that a belief = a good reason:
Good as in the traditional Greek sense that the end is either the truth or the flourishing of people, including any instruments that serve as a means to those ends;
Reason as in a cause originating in the mind that influences action or behavior.
So if you had a belief of something, you had a good reason to do something. Believing is good reasoning.
Obviously, you can easily devolve into moral relativism here, so I think the Aristotelian school can ground us again, favoring perception, deduction, and induction to get at "objective" reality, like you say.
The issue is when pundits and rhetoricians hijack these projects by basing them on religion or political party, using language and pseudo-logic that can appear as trustworthy to those easily convinced.
I like your description of ideas though. This sort of concept has been jostling around in my head for a few months. Appreciate the illustration!
There are bus services in rural US where companies pick up people who've signed up. It's not even a market problem at this point.
People are just NIMBYs and averse to change, or at least the ones who show up to the local town council.