Microstrategy is a company, which is a very different situation. Companies take out loans to grow their business all the time. A company taking out a loan and an individual taking out a loan are two very different things. For example a company can sell some stock to get more money, you can't just sell stock in yourself to raise money. But a company can only do this if they know their cash flow is gonna be able to handle the loan if problems occur in the market.
Yes this is point here, MSTR's loans were based on a high amount of collateral (a chunk of their Bitcoin stash). Meaning despite it being a risk, it was around $30K if not mistaken, and in the end they managed to lower their liquidation risk to $3K before paying it back due to very high collateral. In the end it was a bit of a dumb loan as there was no rush to buy Bitcoin back then, but collateral was on their side.
The difference with individual loans (non-corporate) is that time is your enemy. Bitcoin could still increase by say 2x, but if it takes a year or longer, the interest could eat you up in the meantime. The only "good" time to take a loan is if you're expecting an imminent bull market, rather than trying to buy the lows. You could buy the lows and price go sideways for a year, which will simply cost you a lot of interest.