Yes 1Gbps up and down is overkill. In the real world, (outside of speed tests) the best I was able to get was around 100Mbps u/d when connecting to my company's colo via VPN after business hours. Even Amazon limits my connection to my AWS resources to around 70Mbps.

WiFi the best I can get is around 400/400 when standing right by the router on either my phone or laptops.

Video needs at most 20Mbps and I don't know how much bandwidth that my son's PS4 or Xbox can't take advantage of.

Every bedroom in our house, the living room, the gym, and my office are wired. But my 3rd Gen AppleTVs only have 100Mbps connections, my Roku sticks/TVs are WiFi and only the game systems, my computers in the office and my one 4th Gen AppleTV actually have wired gig-e connections.

On the other hand, the gigabit plan is the only one that doesn't have a cap.

But if I had XFinity (thank God I don't) even thier gigabit Service is limited to 35Mbps upload.