Mining on margin consistently wrecks people when BTC drops. It's the exact same thing with any volatile asset. Why do so few people learn this lesson? What's worse is that they all say they are overcollateralized, yet their collateral is never enough to cover margin calls when the entire market tanks.

If you're not prepared for $5000/BTC, you should not be borrowing money to buy BTC or mining hardware, or borrowing to start a Bitcoin company.

Instead of borrowing money, take the money you're thinking of spending on a down payment and interest payments and just buy BTC. When you have enough savings, then start a business. Stacking sats is so easy and successful that only midwits think it's dumb.