As far as I know, it would be impossible for government to put taxes on decentralized market. Here in my country, NFT games were popular especially in the times of pandemic. A lot of investor tried this kind of investment where it reach to the point that it has been acknowledged by the media and news. They interviewed people who profit and asked them questions such as what they did to their money. Some bought houses, motorcycle and build businesses.

Due to its popularity, government take initiative to how people can earn that much without paying taxes. They announced it to the public that taxes will be included when playing NFT games. Of course they can't do that in the end its still decentralized.  Maybe in the next decades some games every transactions will include taxes fee. It just need some proper documentation and legalisation.