> So, IMHO, if you want people to use "open, decentralized, and user controlled" tools in 2026, you have to ban the centralized alternatives. Otherwise you're yelling at clouds, as most people will default to the lowest friction alternative they have access to.

I disagree. You don't have to ban the centralized alternatives (which is problematic) -- but you do have to make the alternative as frictionless as possible.