My opinion is that in time Bitcoin market share will keep reducing, as many other coins and tokens and platforms will keep surging.
In the long term, the blockchain technology is very disruptive. Bitcoin will more likely compete with Gold, Ethereum will provide a backbone for many uses.
So I am not really sure a collapse is incoming, it depends if a real bubble will quickly form.
Too fast to mention the bitcoin market is about to collapse, bitcoin is very strong and it is unlikely that bitcoin will collapse quickly. It's just negative thinking that is too panicky with the situation.