What happened to good mainstream horror movies?

I haven't seen any Hostel movies, so can't tell about them. "Torture porn" means movies that use realistic, graphic violence, especially torturing, as their major selling pitch. Of course this kind of cinema has existed since the 70s, but the term was coined only after French 2003 movie Haute Tension (High Tension), which gained a lot of attention and became a decent hit. More French movies of similar nature soon followed. Saw I guess was the first modern US film of this kind, though if I remember correctly it wasn't until Saw III (??) that they were openly advertised with those "so violent that people fainted at the premiere" etc kind of "news". Some Eli Roth films/productions belong to the genre or at least are close to it, though his style is more darkly humorous. The genre has fallen into very low budget straight-to-blu category now that the trend has pretty much died. People just lost interest, since they tend to be very repetitive. Incident in a Ghostland from few years back gained some attention but I don't see this genre making a big comeback any time soon.