The donation model works well for individuals or very small teams. Some of the biggest creators on Patreon receive thousands of dollars each month, and after fees and taxes, they might still get to keep several thousands at the end of the month. That's a pretty lucrative business for a single person.
FAKKU, however, is a company, meaning we have a large staff, an office building with equipment, licensing and royalty fees, printing, storage, and shipping costs, etc. This is very different from a person who converted a room in their apartment to an office and create their content from there. This is not meant as a jab against those creators; I only want to illustrate that a company has a lot of extra costs that your typical Patreon-funded creator doesn't.
I would suggest looking through the adult categories on a site such as
Graphtreon. You'll find that even if you limit yourself to the top earners, the vast majority don't even earn enough to support two people at US minimum wage. This is fine for the independent creator, but obviously unsustainable for a company.
For the sake of transparency, I have zero involvement in our finances and no real knowledge/interest when it comes to economics. Still, I'm fairly certain you need more than a couple thousands per month (before any deductions) to run a localization/publishing business.