There is so much that PayPal can do without justifying.

If you know how to navigate without pissing them off, you can last long.

Here is some sources to view:

http://www.aspkin.com/forums/paypal-limited/

http://auctionessistance.com/paypal-limitations-reasons/

http://complaints.paypalsucks.com/

http://www.ebay.com/gds/why-PayPal-sucks-/10000000004021271/g.html