I suspect one thing that would help that is if upload bandwidth intensive activity grew in popularity. Also a matter of who they want to reach and why for demand. In terms of use cases decentralization is currently still in Cypherpunks (doing it for its own sake) and "connoisseurs" (doing it because what they want isn't available otherwise regardless if it is accessing paid content but bypassing geofences, infringing downloads, or banned content). I would like to see decentralization be viable as well but it is fairly niche and a solution looking for a problem.

Currently media is downloading more than uploading even for video games. Client trust issues (and not allowing arbitrary cheating) encourage centralization to at least domain servers for the sake of validation and finding other players.

I think something ARGy like say Pokemon Go but strategic (you have fixed resource pools and open knowledge of everything thus cheaters can instantly be flagged as not playing the same rules). But that would also be niche.

One thing that really could use decentralization is IoT (along with actually making it worth useful and security).

Of course the whole domain is sadly a hot mess of greed often about gathering as much data from their customer, screwing them over with needless connectivity requirements and considering actual functionality an afterthought and security an afterthought to that and then wondering why it isn't catching on. That is a whole other rant.