for one, there's a limited number of stalls. It certainly wouldn't be shocking if whoever bribed the government coordinator the most got one of the stalls or if people the coordinators closest friends got priority access to the stalls etc...
I don't know the ideal solution. It might be more fair if there was a raffle for stalls each week. Instead we see the same people in the same stalls. Curious how a new farmer gets in to the market. Do they offer more money than someone already there?
Interestingly the link above is not to a government run farmers market. It's to a a government site that then links to a non-government, non-profit organization. So that farmers market is not government run
If this was a missile base or a oil refinery, maybe there'd be something to consider here. But we're talking about one of the oldest forms of public marketplace; plenty of marketplaces don't even have toilets or windows. My local one doesn't.