'Had' being the operative word.
WoW removed Elite enemies from it's open world maps. Everything that was dangerous out in the world is no longer, and if the single most popular MMO on the market decided that was the right choice, what are the chances other games are going to revert on that anytime soon?
AAA games don't take risks, they do what works. We may very well get more open world content, but it's unlikely to ever be dangerous to individuals passing by.