This kind of thing is the bread and butter of SaaS companies though. It's also exactly the kind of thing companies _wouldn't_ use open source for because if th

This kind of thing is the bread and butter of SaaS companies though. It's also exactly the kind of thing companies _wouldn't_ use open source for because if the code gets the tax law wrong they have nobody to transfer liability to. Once you have a corporate entity backing a subscription service, insurance underwriters can understand what's going on and you can finally manage your risks.