I'm at least as leery as the next person about entrenching large incumbents, but if the data required to make people rich is unavailable because it needs to be appropriately licensed, why is that a problem for anyone other than the few people trying to be rich?

If my content on platform XYZ will create a benefit for me later on, sell me on that. In the form of free usage, or actual licensing $$ now. The "oh I can't make the money I want without other people's stuff" is not compelling.