Hello! Thanks for your comments 
I believe the example you posted is an external URL link to the marketplace. We are talking about making a fully immersive experience within dcl this means no external links you can make various transactions live in world. I personally believe immersive experiences are vital for dcls transition to VR. To address your concern over who will control the booths, We plan on developing a user controlled selection system. this system will allow users to claim their own “tent” and choose which wearables they would like to sell.
hope this helps let me know if theres any other questions