Inquiry Regarding Legitimacy of WP Theme Sellers and Lack of Legal Action by Envato

I’ve consistently purchased WordPress themes from Envato. Recently, I’ve noticed several websites offering the same themes at an extremely low price of $4 for unlimited downloads. I’m curious about the legality of these websites selling the same themes. Why haven’t they faced legal action from Envato or the original product owners?

It’s been discussed over and over again. The author is not Envato and Envato is asking the authors to deal with illegal sale to handle by themselves and it’s not easy to do it.

You can search the forum for different opinions, etc

Also as fast as you act on one of these 3 more sites spring up - it’s almost impossible to prevent