Why does that matter?
It's the only thing that matters. If price didn't matter, you, and everyone else, would have all the choices.
If there aren't enough people to pay for it voluntarily, then it does not need to be built at all. Simple, eh?
If that were the case, we wouldn't have armed forces, police, or education.
Bus lanes are garbage, they waste space because they are even less utilized than the buses themselves.
So if we have buses, and bus lanes, the bus shouldn't use the bus lane. Wow, you really are a complete idiot.
"I just want to be a good engineer." -- Steve Wozniak, co-founder of Apple Computer, concluding his keynote speech at the 1988 AppleFest