I agree, but the solution isn't to throw out the protocols we have. The solution is to use wired interfaces where appropriate. A light socket doesn't move. It's harder to replace the socket than the bulb, but the best long term solution is to replace the socket with a socket with an Ethernet port as well as a power connection.

I recently started a job at a company that produced Bluetooth chips. I'm currently about a quarter of the way through reading the entire Bluetooth spec. It's 3000 pages long, incredibly complex, and most of the complexity goes to ensuring reliable secure communication. It's not easy to just come up with a new wireless protocol that "just works".