i imagine the major players dont even consider .us or .info or .biz but what they get wrong is as they themselves set the market for the three letter .com and .net the others tlds automatically will follow and rise due to the inherent limitability of the the three letter .com feeding frenzy. the internet is growing so fast and so many users that its becoming a mode of life especially for the younger generation,,,,,,,,, ,
Now consider this scenero..... There are some kids from school are looking to aquire a three letter domain a .com,,,, you think they can afford a three letter .com??? if its even for sale !! or maybe its already developed like so many three letter.coms..... so the alternative would be the others tlds for this new generation of expert computer users....,, they will see hip new .info .biz or if your in the us .us, so as time moves along the younger generation will hold the keys for the future,,,they will succeed and in there success the the new tlds will rise like a phoenix out of the fire.
There is no guessing here there is no speculation its common sense. those who know are fearless and there is little room for mistakes........ NOW the .us has restriction and the big players are afraid because they have so much money already and dont want to put that in jepordy....