Mstr is fine even if we dump back to $3k. They carry close-to-zero cost obligations on their debt.

The premium and stock price will vary, and probably converge close to natural real interest rate over the looong run, but they can't really go bankrupt as long as btc exists. 

 Their debt expires and they're paying about $60m per year in interest 

Not saying they'll go bankrupt, my main point is the high reward comes with high risk, meaning the value of your mstr shares can get crushed way harder than btc