I just landed on this thread and choose to respond to you here, OP. I will say you’re my kinda person :) I’m also an ethical business person and came to conclude that federated marketplaces are the future. I put together a community here (https://lemm.ee/c/fedonomy) but never posted anything. I’ve been thinking / working on this for over a year now, more on the incentive/ economic model and setting up a real life business in a very specific niche. I hate typing on the phone and there is too much to type and it’s like 4 am. Please message me.

And I will bet this is the exact way organic growth mostly happens for social media platforms. PS: I do the same