Grey/black markets, tax evasion, sanction evasion - none of this is going to disappear.
Isn't Monero (and other mechanisms) objectively better for all those things though?
But that's somewhat part of my calculus there. I think Bitcoin's cycles were entirely driven in a top-down way and that the entire financial side of the space was manipulated. I assume it began for political reasons and will end for political reasons as well.
For example some people believe cryptocurrency as a whole was a psyop to distract people from owning PMs and/or normalize digital currenecy. I don't fully buy into either thesis but don't fully dismiss them either.
What little I do understand leads me to believe that whatever the machinations are, they're much more convoluted than just "Bitcoin was made for X"