We're working in software, overhead is extraordinarily low. It might be a bad model for a VC-funded startup, but there's almost certainly enough demand to support a tiny bootstrapped team.
It would work if your tiny team could attract an incredibly huge number of creators who somewhat create a minimum volume of transactions every months.
Otherwise you'd on the hook paying monthly fees for your platform's hosting costs, and you can't properly negociate processing fees as you have no idea of how much volume you'll be processing montb to month (it's not even based on some supply/demand cycle, you're stuck with when creators feel like creating)
I've seen it from the otherside following a Youtube creator on a pay per video plan, and there would be months going by with no videos happening but messaging back and forth to keep the community alive.
Businesses like these don't work without huge scale.