Only time will tell for sure.
It's one thing to improve on sound resolution (lossless) like TrueHD & DTS-HD MA w/o having to change your speaker system or add more speakers to your already crowded room. It's another thing having to buy a new speaker system or add a lot more speakers, wires, and amps to your existing crowded system.
And what is the end result? The theory behind Atmos sounds great. More precise implementation of surround effects. But beyond the theory, is the overall sound experience actually 100% better than DTS-HD MA? 50% better? If not, the outcome for Atmos will not bode well.
I have a friend who is a sales exec who sells projection systems to commercial movie theaters. He has been to a few Atmos demonstrations. He said that the sound is better than most theaters, but it's not really significantly better than the best IMAX theaters he's been to.
So if that's the case - that Atmos is "better, but not significantly better than the best IMAX" - then I just don't see how Atmos can survive in the home environment where people would have to spend more money and add more speakers , wires, and amps into their already crowded rooms.
But, hey, only time will tell.