Bitcoin was not a first mover. It was a culmination of many decades of work and tries of various digital currencies. Being the first mover isn’t the argument for it as you can see in my post.

It was the first one that really worked because all components came together, that is true and this is why it became and stayed dominant. But notice it’s not the firstness that matters. It’s the all components that matters. The firstness is just a side effect so to say.

In order for Bitcoin to lose we would need a paradigm shift, not incremental changes (not even improvements) like altcoins try. For example, if society changed fundamentally where money is not a thing anymore, not because of barter but some other fundamental reason.