Peertube users do not need content nor incentives: they just want to publish their videos and post links to them to their audience.
My photo gallery doesn't need content nor incentives for content creators either... I supply the content and my content creator incentive is showing my vacation pictures to my friends !
Framasoft is originally a non-commercial association of French academics. They have no desire to replace youtube for music videos, unboxing and Minecraft lives.
And about 99% of people who upload to Youtube are not concerned with any kind of incentive other than "Let me share this video". For 99% of people, it is a perfectly capable Youtube replacement (well, beyond being able to search well - a problem the whole Fediverse has...)
I still don't understand the Fediverse's surprisingly common hostility to indexing: a publishing platform that won't let indexers record its publications - what is that supposed to be ?
A bunch of reactionaries seems to believe that search is a privacy violation... On a publishing platform - hilarious !
Anyway, I've stopped trying and my current global village microblogging forum is Bluesky.