I say go for it
Not that I'm going to get one now, but I hope the uptake in 4K tellies will push the providers to sell 4K content over them thar Intartubes - at 55MBPS.
I want that to happen because as of now, there is now way the existing infrastructure can deliver that kind of bandwidth to individual homes. Therefor, people will have their 4K tellies and will not be able to watch 4K content which, of course, they will feel entitled to. That means that the pressure will be enormous to actually deliver on that 55MBPS requirement.
And that means that all this 4K nonsense is going to improve my Internet bandwidth. Since I watch TV on satellite, all those yummy MBPSes will be for me.
So go for it.