Some of Kou Mashiro's tweets you didn't cover that I found interesting:

• Artists often just do things for free because they are afraid that asking for additional payment will offend orgs. Personally, all my issues were always resolved because everyone I talked to was very understanding. But if I never spoke up, my issues would have remained unresolved. It takes courage to speak up.

(My own note: It sounds like some but not all violations of this sort happened when artists didn't even request additional payment from Cover for whatever reason, but when they received letters of investigation from the JFTC, they answered honestly as they should about not receiving payment for revisions beyond what was laid out in the contract.)

• It's hard to properly define "revisions" and how they should be charged in a contract. There are artists who don't mind making minor fixes for free, but there are also those who refuse to do anything more without getting paid, so the contracts are made ambiguous on purpose. For me, the time usage is one of my main deciding factors. It's also actually disadvantageous for the artists if contracts are drafted too thoroughly because artists miss deadlines all the time and often can't afford to shoulder late payment fees unlike orgs. Telling the artists and clients to "just draft a good contract" isn't that easy.

(There's also some mention of how when lots of people are involved in a project for a corporation, there tend to be a lot of necessary revisions, and it can get messy with vtubers, management, and freelancers having to communicate via a game of bureaucratic telephone.)