I'd say Comcast should use 5Ghz but then that spectrum will get crowded too.
I'd say Comcast should use 5Ghz but then that spectrum will get crowded too.
Consumers should have to spend extra on 2.4 AP gear to support legacy client devices. 5ghz has reduced propagation and there are so many more channels available that it is actually optimal to use in dense evvironments. Mesh wifi is pretty much a requirement for a lot of users to keep the same coverage with multiple rooms compared with their existing 2.4 ghz network.
Poor 5ghz propagation solved:
https://eero.com/ https://lumahome.com/ https://madeby.google.com/wifi/how-it-works/ http://www.samsung.com/us/smart-home/ https://www.open-mesh.com/
In addition, I think Sonos still sells devices without 5GHz radios (and probably plenty of other companies).
2.4ghz works perfectly, and always has. I think the real answer here is more dual band routers, even in cheapo ISP provided combo boxes.
Lack of support is a huge problem though. Tons of devices are sold without 5Ghz support.
I can see about 10 other 5Ghz networks around me, but they only marginally interfere with mine compared to 2.4Ghz.