Well BitMit has a escrow service. Dunno if eBay has it, but that is a huge plus.
ebay/paypal doesnt need escrow because of its reversibility. But since pp already implements consumer protection and conflict resolution, adding escrow for bitcoin (or making the payments reversible, even if through fiat) seems pretty darn obvious.
Ive always said paypal and bitcoin are not enemies, but natural allies. Paypal and bitpay would be enemies, well, competitors really, but paypal brings a lot to the table that is really useful for bitcoin and that no one offers yet.
My bold prediction: in 2014 paypal will buy bit-pay and it's tony Gallippi's turn to retire young and rich or start building space rockets and electric cars

newsflash: Paypal's already 'heavily' invested in Bitpay through PP's established Founders Fund. source