The payment card system is a huge business scam, and not just PayPal by any stretch. There are payment processors that are much bigger thieves than PayPal. The difference is that you, the consumer, don't see them at work.
Until PayPal came along, most people had no idea what the banks take out of every single credit or debit card transaction. Depending on the type of transaction, every time you use a payment card, some bank gets anywhere from 2% to 10% of the total transaction. If you have a high-risk business and the principals don't have good credit, yes, the banks and payment processors can take up to 10% of each transaction. The higher the risk, also the longer the wait to get your funds. If you are a high-risk business, you may be stuck with using off-shore processors that take that high % and hold your money for days or weeks before depositing it in your bank.
PayPal simply opened it up for banks and payment processors to allow individuals to send each other funds using cards so they could start taking money from individuals and not just businesses.
For many businesses, especially small and new businesses, PayPal actually has lower rates than other payment card processors available to them.
Every time you pay with a card anywhere, the banks get a cut.
Having been in small business accounting for many years, this still irks me.
So, I'm not saying PayPal isn't the devil (no religious implication intended, just for lack of a better word), I'm saying it's just the devil you see most clearly. There are much worse.
If you don't like the way they work, use your payment cards as little as possible, especially for small businesses, like the ones that make the stuff we love to buy for our bikes and other hobbies.
The urge to buy terrorizes