Watermark stamp your art to prevent art thievery by the companies/independent retail websites.
nothing happened to me yet but
When I first signed up at Deviantart over ten years ago, there were none in the Terms of Agreement about allowing your art being taken/used by companies. Remember, it was TEN YEARS AGO.
As the years go by, DA started adding things to the Terms of Agreement. Silly us, we do not pay attention to the announcements about changes..... THAT WE KNOW OF.
I'm still here but I will be posting art less and less.