they have a monopoly IMO on online pay service.
90% of MY CUSTOMERS will not buy from me unless they can use paypal. They know that paypal sides almost always with the buyer so they are protected, and a great deal of them know how to scam paypal and the seller into getting money.
Paypal DOES NOT PROTECT THE SELLER nearly as much as the buyer.
So when 90% of your customer base wants to use that service, you cant simply say "no".
Paypal has businesses by the balls because you either use them and accept the fact that every 6 months youll lose 1-2 transactions and deal with it, or dont use them and pretty much go out of business.
Thats the simple truth.