Stop calling them tulips. The most “educated” answer is that you don’t understand them. Stop pretending you do. A thing like this is the first off, many rules of economics don’t apply.
"The price of land is solid, they aren't making more of it" - 2007
Bubbles are generally about Human psychology not about the underlying asset. Tulips, student loans, homes, internet domains, websites etc etc.
The problem there is really Human psychology. For that matter people still continue to take student loans, buy homes, buy tulips or whatever. Its just not at the bubble prices.
Tragedy of the commons. Even if I "want" the price of bitcoin to go up, any dollar I invest in Bitcoin will only increase the value that I actually capture by an infinitesimal amount.
No.
Once everyone is invested the pool of potential new investors has been exhausted and the bubble pops.