Bitcoin will never be centralized and the governments have understood this before they make fud statement about Bitcoin some years ago. However, it hasn't reach its maximum potential either.
Having said that, I'm surprised the OP doesn't understand that the failure of the fiat currency was the reason why cryptocurrency was invented by Satoshi. Therefore, leaving crypto going to fiat is not sensible and I never for once see the SEC after control Bitcoin since they can only centralized exchange sites.