Buying the entire supply of Bitcoin? This seems like a completely bizarre and unrealistic idea to me. I don't think they could pull it off, even in the long run.
I wouldn't be surprised if this idea was on Michael Saylor's mind, but it's a completely unrealistic plan, especially given his lack of sufficient liquidity and the mounting debts of his company, which have reached billions. Buying such large quantities would require a huge amount of liquidity, which is difficult to obtain.