Correction: devs have made the mistake of turning everything into remote calls, without having any understanding as to the performance implications of doing so.
Sonos’ app is a perfect example of this. The old app controlled everything locally, since the speakers set up their own wireless mesh network. This worked fantastically well. Someone at Sonos got the bright idea to completely rewrite the app such that it wasn’t even backwards-compatible with older hardware, and everything is now a remote calls. Changing volume? Phone —> Router —> WAN —> Cloud —> Router —> Speakers. Just… WHY. This failed so spectacularly that the CEO responsible stepped down / was forced out, and the new one claims that fixing the app is his top priority. We’ll see.