Nitro MT's will never die. I still have and run one of the first Revo's to be available(got it a week after it came out). Add to that the fact that I also have added an HPI Nitro MT2 G3.0 to my fleet. I will run electric, but MT's just don't seem right all quiet and such. I'd also like to see an electric MT go through about 2.5 feet of snow without getting stuck. My Revo did it last winter, and is looking forward to it again this winter.
Personnaly, I think that nitro's bash way better than electrics do, simply because your refuel time is seconds, whereas the electrics take a while to refuel(recharge the batteries).
The other thing that is killing the nitro's is the enviro idiots who have tried to tell me that Nitro engines are highly polluting, and that I should switch to electric. Pointed out that over the life of a given nitro engine that's tuned and maintained, it will produce fewer emissions(including production) than are produced by the production and charging of electric batteries, especially LiPo. That's just sad when someone sees a little bit of smoke coming from the muffler on a truck and assumes that it's destroying the atmosphere.
Electric has a place, teaching beginners how to run cars and trucks with fewer things to worry about. Then, once they get the hang of it, switch to nitro. It's a whole new monster. There are people who prefer electric because it is cleaner to run and simpler, but then there are die hard nitro fans(like me) who feel that in order for it to be a MT, it has to make a LOT of noise(Trinity High Flow on OS18TM, loads of power and noise).

The overall biggest threat to the nitro's is actually the government. Ever wonder why a gallon of fuel that used to cost 20 bucks now costs 35 bucks? It's not the economy doing it. It's the government upping the shipping requirements of it because it's explosive(big woop, so is gasoline and people drive around with gallons of that). They are basically trying to steer the hobby the way they want it to go, regardless of what people really want. They have this big push for energy savings, and then make it cheaper to run electrics, which require charging, which ends up using more energy than charging a hump pack, simply because you have to do it so much more often.

Sorry if I digressed, but I finally was able to find out why nitro fuel is now costing so much. Bought a gallon of Trinity Horsepower, and it cost me 35 bucks, where I used to be able to get the same fuel for 20 bucks when I first got my revo.