
I've read similar sentiments, especially from news sources in the UK, for a few years now. The presented theory is that "
it is unethical for these companies / freelance writers to profit from this dishonest business." If Paypal or banks fall to these pressures, it would make very dangerous precedents for businesses and entrepreneurs. Depending on whom you ask, thousands of companies from various business niches can be considered "unethical." Let's start from lobbying or donations to political parties ;)
Even if Paypal fails to protect UK freelance writers and businesses from the attacks, they will find a way to accept money elsewhere, let's see: 2Checkout, Payoneer, Skrill, Stripe, Sage, Authorize (and hundreds of places that offer credit / debit card payments through merchant accounts), Transferwise, Amazon cards, Google Checkout, or regular bank transfer / check transactions. If Paypal decides to target UK businesses only, they could open an US or EU account and have money transferred there.
Besides, oftentimes a business or a freelancer offers multiple services, like essay editing / tutoring, paraphrasing, translations, data entry, article writing, marketing, etc. What would Paypal do in such cases? Would they investigate each and every transaction to determine whether the transaction was related to "essay editing" vs "essay writing" vs "SEO content writing" vs "dissertation revision" vs "statistical analysis," etc? If they ban a business that doesn't fully violate their terms, they can be sued and lose.
It seems EU organizations trying to pressure US companies has become fashionable these days, so I'd not expect Paypal to risk both losing business and getting into possible legal troubles.