CoinMall is pseudonymous and all messages / products are P2P encrypted by default. There’s 0 monetizable user data available.

Server-side encryption? All that information is still accessible to you then. Users need to trust you.

We charge for listing upsells such as promoting a listing in various ways. No need for charging fees this way.

That’s interesting, but I’m extremely skeptical that anyone hosting the infrastructure of a marketplace will — long term — ever be able to survive without charging fees. What happens when charging for listing upsells doesn’t pull in enough money to cover infrastructure costs? In a decentralized market there are no centralized infrastructure costs, so this isn’t a problem.

Surprisingly enough there’s very few digital goods which are actually illegal. Again, OpenBazaar censors on the search engine level as well.

I suspect you’ll find rather quickly that your no-censorship policy isn’t possible to maintain. OpenBazaar doesn’t censor on any level; search is an outside service and those providers are free to censor all they want. There’s no one that can take down any OpenBazaar listings, unlike centralized services which can (and inevitably will) censor trivially.

Users do not have total control over a sale on OpenBazaar. When a purchase is disputed, for example, the moderator system is still buggy (resulting in funds stuck in limbo). Check the OB subreddit for users complaining about not having control over a purchase.

Those complaints are all from version 1.0 of the software, and we’ve made massive improvement in the 2.0 version. Funds can’t be stuck in limbo anymore due to timelock. OpenBazaar users control their own store data, their own store keys, their own Bitcoin wallet and keys, etc. Centralized services control all of the users’ data and are forced to trust them completely.

I’ve got nothing against your service. It’s like using PayPal instead of Bitcoin. It works, it’s just centralized and you’re forced to trust a third party.