Whether you care to admit it or not, I think most people will agree that Agora and Evolution are currently the top marketplaces.
Pretty soon all the other small marketplaces will die out, and vendors and users will all move to either one of these sites.
At this point, it would be EXTREMELY foolish for Agora or Evo to run an exit scam. These two markets are basically competing for almost complete control of the Darknet Market game.
I'm pretty sure that the owners of these sites know this also. Evolution is stepping up their game with excellent customer support and a beautiful site layout to compete with Agora. The owner of Agora could easily make A LOT of money if they don't allow Evo to take the lead.
Personally, I always prefer a ONE Super(Darknet)Market. Silkroad 1 was the original super market. Sure BMR existed, but Silkroad 1 had a monopoly almost.
It's crazy to think how quickly marketplaces die out. If Sheep wouldn't have fucked up, they would be the leading market right now. If "The Marketplace" didn't fuck everyone, they would control the game. If Pandora didn't steal from their users, they would probably be tied with Agora and Evo.
It's funny to think how so many markets could have had control, but they always ended up scamming their users.
I think Evo and Agora will be around for a while.
To be honest I don't like the idea of one "super" darknet market. I think having a selection of them is better for consumers for a multitude of reasons.