the 4K TVs are going to be like having the HD TV was 10 yrs ago. I knew people who when out and paid thousands for the original HD tv brought them home and hook them to cable or such and on watch standard Def tv since no HD content was even available at the time. These say people use to argue how much better the picture was on their HD over a regular TV. The only thing better was it was just bigger.
4K is going to be the same way for the next 10 yrs since no broadcaster or Cable/Satellite operator has any near future plans to support 4K. It is also like 3D is today, hardly any content being broadcast in 3D. It is all over blown at this point.