I agree with everything you said except that Bitcoin will die off.

I'm not entirely convinced of that yet because, while Bitcoin has it's issues with scalability and transactional efficiency (and it needs to be able to adapt to the massive global adoption that has already started), there are hundreds of the best developers in the world who are constantly working on Bitcoin Core.

Hence, I think it will always have a place in the market, but to your point, it may get overtaken by a better alt coin one day.