Paypal, and Ebay are known for being horrible companies. Knowing that fact. Why don't people just use Amazon?

Amazon is a better company to buy, and sell on. I don;t understand why people haven't made that switch. The only advantage Paypal, and Ebay has over Amazon is their number of users.

That why we should all switch to Amazon. We should make Paypal suffer for their horrible service, and leave their site useless like Myspace when Facebook became popular.

Why haven't you made the switch?