Yep, looking good and they seem to be on track

OpenBazaar Can't competitor to eBay in anyway. But OpenBazaar is good platform for Bitcoin users to shopping.
ebay has been around for 20 years
It will take time as bitcoin is still a relatively new technology but openbazaar has no fees, cannot be censored and is open source. Significant advantages IMHO.
If eventually bitcoin takes over paypal it will be very reasonable to assume that openbazaar could to the same with ebay