We are trying, but the interop of these self hosted services currently suck. Fediverse is hard to get in to unless you have many users or you just have to join a popular instance. Who knows what they do in this instance, and it turns back into a loop.
I just don't think it's gotten to the point that anyone is interested. I wonder if we did do a better job that the aggressive filtering and monitoring wouldn't naturally move down the stack.
for example we could completely obviate Facebook by having a standard mechanism for something like an rss feed. individuals or organizations could publish my stream(s) from their own leaf connections, set up cloud instances, or pay someone to host them. there could be a whole ecosystem of readers with various UIs and policy filters. people/organizations could add value by aggregating trusted streams or filtering them for content some people might find offensive. and at the end of the day it doesn't require people who just want to use it to set up persistent networking and storage.
in any case we just got suckered into handing the keys to the internet to companies like Meta and Google, which make vast amounts of money to control the discourse in corrosive ways. all because we bought into the notion that nothing is real unless someone is making a buck off it.
having a standard and a whole space of compatible programs doesn't preclude people from making lifestyle money selling filters and aggregators and content, but it kind of removes the Meta-style leverage over the whole system.