Earlier quoted context omitted.
I am truly disgusted by this comment and those with a similar sentiment below. Selling PBNs is not against Paypal’s TOS, regardless of whether or not you happen to dislike them. The point is that PayPal falsely asserted that a business violated its TOS, and that means that it could happen to anyone else - instantly and without explanation. That is the problem here.
I just googled PBN. It looks like it is a black-hat, completely inauthentic SEO tactic that has no legitimate value. Why on Earth or you defending them? Am I missing something?
If you are subject to the whims and value judgments of individual PayPal employees, rather than policy documents, that is truly scary. Sell something that happens to offend a random employee's moral, political, or religious sensibilities? You might lose your account. What happens if a relative of a PayPal employee decides that you weren't fast enough with customer service, and tells them about it? Can that employee go searching for your account and kill it simply because they have a relative that wasn't impressed with the speed of your customer service?
The point is that these companies establish written policies for a reason. If those policies are not being followed, then businesses shouldn't use PayPal - not because they want to defend PBN sellers, but because their own business may be at risk even when they do nothing wrong.