Government might not able to impose taxes directly on transactions being made on crypto or into bitcoin but come to think off that we do make conversions from btc to local fiat which that would be the time government will really impose taxes from us. Why do people afraid of tax? As a citizen its an obligation and others do really strive to evade taxes as they can without even thinking on whats the actual purpose of it.
Government, as they regulate the trading platforms in their own countries, will impose taxes as long as it can be seen as a stable in security as there are a lot of hacks going on in the trading platforms that have a lot of vulnerabilities or exploits from hackers. I don't see any significance of evading taxes in crypto. Is it because it denies the rule of anonymity anymore? I don't even think the crypto is supposed to be anonymity. It just didn't have that large of adoption that's why it looks anonymous. I wouldn't mind if government put a tax on it soon as long as they provide adequate or essential support to cryptocurrency. Set aside corruption as that is a matter of local discussion.