Both Ebay and Amazon never used an escrow service that made sellers wait to receive payment for the items they sold and shipped. Not using an escrow seemed to have worked out well for them.
Yes, but they have buyer protection. I will get my money back if you ship bogus items and provide services that don't work as advertised.
Plus, a ban on their platforms for sellers is a bigger penalty than simply returning money through escrow.
Probably the most complicated part of the escrow is to confirm that there really was an exchange of goods. This is not a problem with transactions on a public blockchain like Bitcoin, already when the mediator has to determine whether a certain service has been performed in all the frameworks of the contract.
For a while, the platform
https://zen.land/ was quite active here, I tested them and they seemed promising.
OP, @SelfCustody, is there a possibility to write all the answers in one post, and not to write a new post for each reply? It's just tiring to read, and otherwise, it's against the forum rules