I would think the free aspect of Bitcoin would be appealing to eBay/Paypal, assuming the bulk of the ~3% fee goes to a bank/Visa/MC. The users are accustomed to

I would think the free aspect of Bitcoin would be appealing to eBay/Paypal, assuming the bulk of the ~3% fee goes to a bank/Visa/MC. The users are accustomed to paying the fee, so eBay has an opportunity to keep it all to themselves