Id the government implemented rules and regulations, they need to be sure that it is not just for there interest but also for the welfare of the users of bitcoin, and other coins or the crypto itself. Putting taxes will do but if they implemented something that concerns with the identity of users well it will definitely undergo in a debate. The regulations must only concern with the security the users will have.
I dont think that government will make regulations which wont try to get identity of users because they are implementing the rules and regulations in which their main criteria will be to show the identity of users. If you see last all ICO are asking KYC procedure, which means their is identity verification's of users who wanted to be in crypto world.
The funny part about your extremely accurate comment is that different governments are COMPETING behind closed doors for "regulating" it best. If one governments regulation is too strict (like India's), then people create a black market economy that leaves the banks in their country with less money.
If it's banned, people from other countries earn a LOT more for selling crypto to people in that country. So Rupee's for example, get traded for USD or BTC while India banks have to pretend the Rupee will stop dropping like it has been for two years.