>where the portals profit from being more lenient, so that they have a larger amount of sellers (and sales) of cheap crap, rather than being more punishing, and

>where the portals profit from being more lenient, so that they have a larger amount of sellers (and sales) of cheap crap, rather than being more punishing, and losing sales OTOH being more punishing also incentivizes false reporting by competitors, which isn't at all rare.