What are the legitimate new capabilities you're thinking of, which many people desire, but can't have primarily because of (mobile) internet speeds?
If I could pick up a 5g signal I could opt for that instead. It's like suddenly having an option for installing a dish instead of whatever the cable company serves you.
As far as speed, I'm not holding my breath. In a previous apartment I did actually have fiber but it wasn't the game changer I thought it would be. Downloads and streaming are capped at a point. The only way to actually use all of this horsepower I had was with bittorrent, and boy it downloaded stuff so fast that the write speed on my drive became a significant bottleneck. I even demoed Googles project stream and while that worked OK, I still got a lot of hickups and low quality stream moments that showed how far away the delivery technlogy was (AC:O was playable but there was way too much latency for a multiplayer game to stream with this technology), even if I had the very best internet on the market.