Governments benefit in various ways. Taxation is one aspect, and controlling the centralized ecosystem is another aspect. I may agree that the controlling aspect has more direct value to the government, but as crypto grows larger and larger, the tax income flowing into the pocket of the government grows larger too. Crypto has the potential to become a multi trillion dollar asset class, and this will happen whether governments fairly regulate the market or not. It's up to them. First option is to obtain full control over anything that's centralized and earn massive amounts of income through tax. Second option is to slow down or even prohibit crypto, which will result in the government to not only miss out on massive potential tax income, but most importantly, they lose all the control they could have had. Most governments aren't stupid, and will go with the first option.