Personally I'm not a fan of ads. I block them on both my pc and phone and I hit the mute button when they come on tv. I also have no problem waiting a year to watch a popular show until it comes out on Netflix or DVD just so I don't have to deal with commercials.
As for smartphone tech, I'd say yes and no. The way we use our smartphones hasn't really changed since smartphones arrived. They've gotten faster and more refined, but we all basically do the exact same things we've been doing since they came out. We talk, we text, we surf the net, take pictures and watch/listen to media etc. Nothing has changed there and I don't see these basic actions (or the way we do them) changing for awhile. Manufacturers will simply continue to refine what we already have.... at least until holographic displays/devices arrive onto the scene. So in a way I'd say yes, we've reached our limit.
Even when holographic devices arrive, we'll still be using them to do the exact same functions we've always done....communicate, surf the web, view & manage our media and entertainment.
Until then, manufacturers will continue to refine what we already have.
S5 tap'n