It would likely lead to a lot of issues. The games companies would need licences like a bank. They would need to keep it secure and have funds availabke to offset a run. It would likely also mean that players would be able to refund unused cash.
If they change the value in game, it might lead to gains which are taxable or losses which are possible to offset.
Doom@ttrpg.network 3 months ago
Discourage in-game currency I think is the goal