Another possibility is as USD depreciates, inflation sets in and they might need a viable hedge against inflation. I know a lot of people will say GOLD but then you need something that can be globally accessible and easily transacted; this is where BTC becomes the popular choice and with adoption slowly creeping up, the choice of accepting BTC might become easier. But that will be accelerated if crypto industry becomes regulated which have already begun with lots of top exchanges like Binance, Kucoin, Bitget and Bybit already announcing KYC requirements for their users.
Let's keep our fingers crossed though!!