Times are changing, no doubt about it.

Nitro vs electric.... Humm reminds me of fuel injected vs carby.... Would u believe people still argue that.
People use to argue about steam vs internail combusting. No kidding trains are a great example.
Look at the world around us, if a engine can be replaced with a motor it has or will be, too many examples to list
The transport sector is allready using IC motors with generators, no more direct drive for heavy machinery.
Hybrid cars are becoming very popular, lawn mowers and weed wackers are now brushless, trains are becoming fully electric, electric full scale dragsters are just taking off,...

Let's face it, in general IC engine are been phased out.

If the world around us is going electric, wouldent it make sence to assume and predict that our beloved hobby might end up the same?

I think for nitro to keep alive over the next 20 years it needs to pick up its game. But how? Those motors are at the limit
Where brushless technology will most likely improve even more. We might see more devolepment on the hydrogen full cells...
Then we can argue water vs lipo... Who knows