I have LTE as the only internet connection to my house, not by choice, but its the only game faster than t1 speeds, and latency that is tolerable. (have tried satellite, and local "wireless" plans)
Speed is great, but the cap at 30GB per month of around $298(phone usage included) is pretty steep, and the overage charges are even steeper. Yea there is competition, but their prices are higher with even more draconian overage fees.
I expect all wired data plans here in the US start mimicking the wireless plans with high rates and low GB usage amounts.