The way I see this is, Bitcoin either pulls through here, we activate SegWit, progress on to Lightning Network, and all is well. This will require miners to cave in and stop being incredibly greedy, but IF it happens we could easily see 100k to 1mill per coin within 10 years time.
If not, if we get a coin split, Bitcoin will become a joke to the entire world, and all the naysayers will be rubbing in it our faces about "how they were right all along, Bitcoin was never going to work". Why would people take it seriously if people get the impression that with a bit of political turmoil the coincap can double, therefore diluting their investment by half? Why would people take it seriously if it can't resist this sort of an attack? They won't. In 10 years from now, if this crossroads fails and we get a split, it won't be 100k to 1 mill per coin, Bitcoin will likely have been superseded by something else and the entire premise of a blockchain store of value may be lost completely.
These short sighted miners do not realize the damage they are doing, by attempting to control their destiny they are destroying their future and the future of every other Bitcoin adopter, business, investor out there as well.
Bitcoin NEEDS to resist this attack, a lot is on the line here. Say no to a coin split, it will be devastating for Bitcoin. Say yes to SegWit and Lightning Network, that is the future.