It seems like you're heading in the right direction on packaging/pricing.
Charging for services you manage, more team members, and security features bigger cos care about all make sense to me.
I previously looked at your Pro extensions and some seemed nice to have (UniqueId, emoji), but it wasn't enough to get me to pay, and I rolled my own versions of those instead.
Building multiplayer sync is really tricky, so providing that as a managed service seems valuable and worth paying for. I have no problem paying for services like Clerk.com or Liveblocks.io that involve managed "servers" I don't want to build/run vs a purely client-side library.
I recently discovered Liveblocks, and think their positioning/marketing/docs are great -- the fastest way to turn any SaaS app multiplayer.
I wonder if you could do something similar but focused on all the complexities of text editing (esp since it's such a core primitive for LLMs now). Just a thought - excited to see where you take it!