It needs someone like Amazon/Ebay to adapt the payment system and then we will all be laughing with any luck!
Don't count on that happening soon. E-tailers want the refunds that credit cards and Paypal offer. The banks and Paypal make good money moving other people's money around. They don't want to promote other systems, especially ones that are faster and cheaper.
I used to get pissed off because Paypal wouldn't accept Bitcoin deposits. They could be making a commission on each transaction as surely as they do on my CAD/USD transactions. They'd also make their standard end on the eBay sale.
Because I don't use credit cards, transferring dollars to my Paypal account takes a week (5 "business" days) and costs a fee. This means missing out on bargains and buy-me-nows I might have jumped on. I try to keep a reasonable balance in my account but sometimes a larger amount is required. They're missing out on a lot of business by not accepting Bitcoin.
Obviously, they have greater concerns than immediate revenues and profits.