It’s discouraging that in the US some companies or developers put up banners advertising their themes and they’re always featured, giving almost no opportunities to other developers. Every two weeks, every month it’s the same. If it’s paid, I think Samsung should limit it or give other developers opportunities to promote their work.
Another thing I notice is themes with Mickey Mouse. Okay, the first Mickey Mouse is in the public domain, but there are “many Mickey Mouses” wearing gloves, etc. that are not in the public domain.
The banner ads are limited to a selected group of sellers and Samsung doesn’t allow anyone else to participate. Those banners are very expensive and you would need significant sales to afford them.
They have other promotions for which you can participate, at no cost.
As for the IP’s, I was recently reading this article and it explains a lot: