I don't see people moving out of Bitcoin to buy a bunch of altcoins in order to get a fork from them because all they will doing is creating a massive tax liability...
Most people have their value locked up in Bitcoin all of these altcoins represent a ton of speculation that's the money that these people are already gambling with!
The way this is going to work out in my opinion is that Bitcoin because it is a store of value will have all of these proportional airdrop Forks off Bitcoin and it will essentially start to instantiate all possible Innovation within a multi token Bitcoin Network.
The Bitcoin Hydra thesis is just that simple