I cannot imagine adding this complexity to my home life. Work is frustrating enough. At home I use the box from the cable company and don't change anything. That way if it doesn't work it's their fault.
But sure, if you don't want to take control of your home network, then the corporate overlords will be more than happy to control it for you --- possibly against your wishes.
EDIT: I have kids and never felt the need to isolate their network. I've never had a guest/friend that needed to access my network, everyone is on a network via their phone. But if they did they can jump on my WiFi.
But apart from those, I just don't understand how adding the complexity makes my life better. People are saying "VLANS!!!" but why would I want to do that? How does my life improve if I do?