There are a lot of other freelance sites that work that way. It’s just tough for me to wrap my mind around choosing a platform and then criticizing a fundamental element of it. The shopping cart style that Fiverr uses sets it apart.
I just think sellers with the ‘contact first’ mentality should look at it from the buyer’s side (especially for anyone having trouble getting sales). When I was a buyer, I would literally move right on to the next gig if I saw the words ‘Contact First’. It just gave me the impression that the purchase would be a long drawn-out process. I think you need to be aware that there are probably other buyers like me doing the exact same thing.
I’m always happy to talk with customers who have questions first. But my preference will always be for clients to simply read the gig and place the order. It keeps everything rolling along on both of our sides.