No, presently OpenBazaar will not approach the usage of eBay. But it is a free market solution that people who actually prefer the free market can use. It is working now so there is currently a working solution without a court system.
It is ok if other people use eBay, we are not here to push freedom on anyone. I have found that the reality is that most people really do not like freedom, some even despise it. That is ok. Nobody will come knocking on your door with a warrant to lock you up for not being free enough.
But it is ok that there is the option out there. You do not have to participate if you are one of the 95% of people that don't want freedom. You can pay an extra 15% on your Amazon purchases for the convenience of using fiat currency instead of bitcoins. That's ok. That is your choice (even though some would prefer to not have such choices).