All of your arguments in this thread have been assuming that what is best for mobile users is the only aspect that matters. The 5 GHz ISM spectrum, for wifi or otherwise, is used by people at home more often then while traveling. Mobile is not the only thing that matters.

I have seen paid wifi hotspots. Luckily they don't absolutely destroy the wifi thoroughput like LTE-U does so I don't mind. Have you ever seen a free LTE service?

A real world example is my use of the Retroshare (application) for encrypted communcations. It uses the DHT network to bootstrap and requires accessible ports as do many other completely legit protocols. Not using centralized services to communicate takes lots of bandwidth and it takes real internet access, ports and all.

It sounds like you picked bad wifi equipment for your home network.