Hello,
This is very interesting.
After making buyers addicted, I understand, but do they need to do that for sellers when there are far too many and they seem to want to eliminate some of them?
Certainly, occasional private sellers quickly become buyers, and so on… but I’m not sure that justifies your theory.
In my opinion, there are too many sellers and Vinted might have an interest in trying to balance the chances by making them more or less visible.
Have a good day
It’s natural selection, either you adapt or you « die. » This phenomenon is found everywhere, truly everywhere. In human relationships, in power dynamics.
I am stepping back from exchanges outside of Clemz’s technical functions, but I can only point out how mistaken these assertions seem. Power dynamics do not stem from natural selection, they precede it 
. And human relationships, where cultural phenomena (= rapid) outweigh natural selection (= slow), lead to the survival of individuals without them needing to adapt, because it is their environment that adapts to them. A common experience we have all lived through, as newborns.
This is all getting very philosophical. 
This phenomenon is found everywhere, truly everywhere. In human relationships, in power relations. Sorry for the misunderstanding, I’m not talking about natural selection (which, by the way, is no longer natural for humans) for the phenomenon, but the phenomenon of random reward.
I’m taking shortcuts because it would take too long to detail and it’s not the subject of the forum 
Power uses these phenomena to control. Paradoxical injunctions, cognitive dissonances, random and illogical rewards, etc., etc.
Have a good weekend everyone.