Since both parties agreed to the deal, are they then locked in for the entire waiting period? Meaning, if a better deal came along with someone else can they get out of existing one?
That would be up to the wording in the contract. DISH paid $690 million in merger termination costs when the deal to buy DirecTV fell through. There is probably some penalty for backing out written into the contract (for other than the specific reasons stated in the contract that allow one party or the other to end the deal).
The past is a horrible predictor of the future. Just because something has never happened doesn't mean it won't. You stated that prices do not go down. While that has historically been true for pay television, it is not universally true and it may not be true about television prices in the future.
Again, I'm talking about pay TV ... not the price of beans or anything else in the universe. I believe you are overly optimistic if you believe prices of pay TV will go down.
If this trend continues, prices will *have* to come down.
The pay TV providers will just keep fighting over the remnants. Perhaps drop a few channel from their cheaper packages - or drop channels totally. Increase fees instead of prices and hide the cost increases.