Cool down the hype. History shows that pioneer technology is rarely viable for a long term. 5 years is a pretty long time considering the speed of blockchain evolution. Thus, I would bet on Ethereum or WavesPlatform, not Bitcoin.
I think Bitcoin will be killed by the one of its competitors.
Unlikely. If anything, it's going to be the complete opposite. Bitcoin will see a boom, whilst altcoin markets will go into complete bear mode. Ethereum is the real pioneer technology and i have serious doubts in it once ICOs get banned or cools down.
For bitcoin, even if the price doesn't move, i think that in 5 years we'll see at least triple the amount of adopters that we are seeing right now. But as adopters increase, price will naturally increase as well.