Simple. Bitcoin sellers are the competition of PayPal in the electronic payment industry. Actually PayPal does not like the concept of the Bitcoin as it is now being uaed worldwide for electronic payment. Unlike before, PayPal dominates the whole electric payment industry in the international setting.

But in local setting, for example here in the Philippines, the competition for electronic payment is a lot bigger. There are companies like gcash, who was actually recently established and 45% owned by Jack Ma, that deals electronic payments in the goods and services purchased.

Although thses electronic payment service companies competes with Bitcoin, Bitcoin has a lot more to offer as it has it's own currency. Bitcoin is the boss of it's own.