The Definitive Guide to the Tippyverse, By Emperor Tippy

[Emperor Tippy]

And, of course, the government could put a limit on it, same as real-life does with real money (I think).

Well it's not so much a government limit as it is that no one else can really afford the initial expenditure/has access to the needed spells.

If you don't allow Solar Abuse traps (and I recommend against them) then creating a Coin factory is hideously expensive and takes a very long time. It's rare enough that the government doesn't even have to bother to regulate it (especially as most everyone who could create one is already a part of the governments ruling body).