Yeah, I've seen this news in a article in https://cointelegraph.com/news/microsoft-removes-bitcoin-as-payment-option-for-microsoft-store saying that microsoft removed bitcoin as payment due to its volatility. Maybe Bill Gates is right because as we had experienced this last year before new year, bitcoin's price really is volatility as it really goes down, and as a company CEO, Bill Gates cannot afford to take risk particularly in a company.