I agree that stealing is WAY too easy, so much so that it unbalances the game's economy if exploited. I like how Skyrim handled stolen goods. While it could be easy to steal in that game as well, stolen items were unsellable to any vendors except for the fences in the thieves' guild, which you had to seek out and become a member of before you could sell to them. Hopefully, a D:OS mod will fix this.