The problem is from a reliability standpoint running stuff at home can be not great. Home network quality / reliability is not going to be datacenter quality, you’re going to have to deal with this thing running all the time & power costs, and you’re probably going to have to be tech-inclined enough to admin these apps at some point. These things have real costs, I think there’s a place for an honest discussion about what things cost for sure, but I don’t think people are getting fleeced on apps in the cloud by and large
It seems like at this point we're describing "running a server at your house." I've been playing with this with a Raspberry Pi for a Plex server (could have gone cloud but why not just tape a Pi to the wall next to my router?), I think the idea has a lot of merit.
That said, I think the wireless routers that a lot of us have in our homes could play an important role in this kind of decentralized Internet. They'd need to have more computing power than many wireless routers do, but that's OK because they're already plugged into the wall all the time.