The content creators also know that if they get in early and luck up on the “next big thing” they could be billionaires or selling their company for billions in a year. I have to say, if I had 2 billion in revenue, but only was getting 1 billion… I think I could live comfortably.
100% of the revenue… minus the hosting. And the streaming costs. And the administrative staff to keep the hosting and streaming servers up and secured. AND the support staff to deal with issues from consumers, to keep those who genuinely enjoy what’s being created, happy. Oh, and if there’s money being exchanged, then that’s a whole ‘nother set of servers (or maybe just pay a fee for someone else to process) perhaps an accountant that can help deal with all of the different currencies in the world, plus a tax expert that will make sure there’s no arcane tax that’s being missed…
These services exist because they’re beneficial to the creators, most who just want to “create” and make it available.