[JAlexoid]

Etsy sellers could become a cartel. And banding together to force some third player to only play with them, to the exclusion of others, is classic cartel behaviour

[beaconstudios]

they weren't forcing Etsy to only play with them, it's not like they're striking for Etsy to become a closed shop with only those sellers.

[JAlexoid]

They are trying to exclude certain type of sellers - so yes