Earlier quoted context omitted.
Register yourself as a company
This requires a Dun & Bradstreet DUNS ID number, which isn’t the most difficult thing in the world to obtain, but also isn’t trivial, especially if you don’t actually have any formal business documents.
The DUNS stuff was pretty funny. All flows related to getting an ID have a big "Are you doing Apple dev stuff?" button. It's like Apple outsourced support to them. Apple's DUNS lookup tool saw my business and the correct DUNS number, but trying to register with it got an error...eventually dissipated after a couple weeks. Same story for registering an account in the first place: it refused to register james@tld.com, where tld is a Google Workspace account, with no discernable error. Again, dissipated after 3 weeks, thankfully.