How does knocking down walled gardens work when different countries have different regulations / censorship? Wouldn’t those countries ban anything decentralized that doesn’t uphold their requirements?
Well, how does it work now? Do you think the only solution to this problem is the one we have now--a centralized, primarily profit-focused, zillion-dollar business entity?
An enormous centralized business does not possess magical fairy dust that negates the problems of international compliance. The underlying solutions to this are technical and social. Big business is merely able to get them done faster and more effectively because their profits are in jeopardy if they do not.
But there are plenty of ways to design applications and protocols such that different groups of people have different featuresets and limitations. We already kind of see that now with things built on top of ActivityPub, ATProto, etc., just not for this reason. For instance, there are some broad-scoped, full-featured social networks running on ActivityPub, but other platforms that just do microblogging and nothing else. They are both built on ActivityPub but can do very different things. You could apply this same concept to different countries and regulations, where the client/network someone uses only does the things that region allows, and then enforce it at the network level.
(Do I love that idea? No, but my point is, it's definitely not a technical impossibility.)
