We’re working with our PayPal rep to look if we can remove the business account requirement. Hopefully I’ll have an update about that soon.
Do keep in mind that if you receive payouts from itch.io then you do not need a business account, the payouts system uses something different. (It would be similar to how you get paid by Patreon and YouTube most likely)
This topic is specifically for those who wish to sell directly from their PayPal account, where they are the merchant of record. If you’re already selling out of your PayPal account directly then you would be responsible for reporting income tax, and PayPal would be required to generate documents, so I would imagine PayPal already has your tax information.