I gave it a shot as buyer like two months ago, and I was actually surprised by how convenient it really is. I initially had the impression that it was a hassle to use and whatnot based on experiences of people on social media, but I think that people mostly say that because they have heard others say so, likely also people who haven't used it.
The inconvenience in my opinion is mostly that you'd have to actually download and sync a client to be able to use OB(though it's decentralized so using a software client is not surprising), in contrast to eBay/Amazon that you simply login on a website on whatever device you have. Last time I tried OB was like half a year ago though, looks like I need to check out what things are new. The buying side is fine in my opinion, but the last time I tried to sell stuff? Even if I think I'm decently tech savvy, there were a few things that made me a bit confused(though I really don't remember what those were).
I think the main problem here is that the demand for a decentralized market place isn't really there at this stage, because most of what's being sold on OB doesn't require anyone to skip centralized market places for. Another aspect is that it lacks marketing, which in crypto is very important if you want to gain ground.
Exactly! Want to buy some earphones? Why buy from OpenBazaar if you can grab them easily from Amazon? Want to pay using BTC? Pay through Purse.io!
Though I really like the concept of a decentralized marketplace, unfortunately I really doubt it gets any traction in the long term for the masses. Unless everyone just suddenly becomes privacy conscious.