This is not selling debt to plebs. All fiat originates as debt. Banks create debt (fiat money) with no risk and no opportunity cost. This debt has artificially low interest rates, because to the bank, it is cost-less.

Corporations take advantage of this extremely cheap debt, expand, buy assets, and buy upstarts (YouTube, for example).

Saylor is just using asymmetric information to buy the most valuable asset with artificially cheap debt. It’s brilliant. Once more businesses and individuals discover this, it accelerates the demise of fiat.