Obviously, reading and comprehension are not strong points of yours, I will expound for you and I will also type really slow.
1. Sprint will NOT totally "Go under" As I've said over and over and over on this thread they will continue in one form or another. That may be as "Sprint" or as another carrier once they are absorbed. They won't turn off the power, tear down their network and say F*&K it. Is that clear enough? Rephrase it, call it what you want or argue just for the sake of it, but the bottom line is they won't just go the way of the Terradactyl, at least in the physical network sense.
2. I don't "hate" Sprint nor have I ever stated as such. My experience with their service was less than satisfactory and guess what I did? I voted with my feet and went to Alltel, where I have been nice and happy. Snug as a bug and happy as can be on all levels of their service.
3. Let's say hypothetically (and I hate doing this...) that AT&T and VZW were to merge. They would form a behemoth of a wireless company and could easily put any other carrier, that is the few that would be left, out of business if they wanted to and probably do so rather easily. Guess what? The chances of that happening would be slim-to-none without some heavy FTC/FCC/USDOJ regulation, restrictions and general pants kicking by the good old Gov of the USofA.
There is legislation on the books going back to, oh the late 1800's, in reference to monopolies, certain trusts and predatory business practices. Even the uber-filthy-rich couldn't fight this back in the day and I don't see it happening in the near future.
So, my friend, while most of this is formed upon my opinion and business observations, keep in mind that businesses and industries go through cycles and repetitions, just like everything else. That includes history to boot.