Talking about the exchanges here, and NOT about BITCOIN, there are now 20k shit-coins, most are shit 99%
The exchanges are the fucking problem, long ago if determined the value of btc p2p met in a park and traded a bag of cash; Price is what people will pay;
The exchanges created tokens and defi, and various other pet rocks that are soon to be 99% worthless;
The question is will the morons leave when ALL the fucking money is gone??
Even if we are talking about Exchanges, I believe these Morons will choose to stay. Even with those scenarios you stated, they will never leave, besides they are called morons for a reason.

BITCOIN will live on, possibly even at $1k or less so fucking what; It was never about the money or getting rich easy, it was always about FREEDOM
I agree, even with just one computer to host the Bitcoin node, the network will live on. Bitcoin is about trusting codes and removing third-party trust. It is indeed about the freedom of transaction.