Well, the ball is in the court of the public transport agencies, then! While OpenStreetMap cannot be expected to accept any and all kind of geographic data imaginable, OSM is meant to serve map data that can supplement other data sources and services.

I’m in Finland, and there’s at least a couple of Web services that do long distance bus/rail/plane route planning, all using OSM. Our municipal bus schedule service, mobile app and the bus stop displays have been using OSM for over a decade.