The only incentive would be to build a brand on another larger platform, but ultimately you would drive your audience towards the protocol that rewards content.
Gradually, then suddenly the network explodes.
Discussion
On top of that, a protocol that allows creators to be rewarded by the people (as compared to one that forces them to be rewarded by the companies/platforms themselves) will ultimately attract the best content creators
Network effect drives all other creators seeking out the truly scarce sats