So let's say I want to heavily influence urban planning in a community, initially because I want to see change in my hometown but perhaps because of some way to profit. What is stopping me from negotiating to run my own trains for a profit to platforms I pay for along an existing railway? Furthermore, what is stopping me from essentially crowdfunding infrastructure in this manner, not from locals via tax but via say shares of a company or something. If I can guarantee profit through some proof of concept, then theoretically this should also be a new way to fund infrastructure privately. Now I'd have to identify profiitable rail lines that are not being exploited, but in my area that's not an issue. So far I haven't heard of anything that truly could stop me from doing this besides upfront capital but Im not worried about doing this tommorrow so whatever.