"so why bitch about things you cant control".
Actually, people have more control than they think. If people don't line up to go to see crappy remakes, then the studios will stop churning them out. Plain and simple, except to concede the notion that everything is cyclical.
It wasn't but a year or two ago that there was much fuss about the state of Hollywood, and how if it weren't for a few unexpected hits (Pirates of the Carribean), the box office would have been a bust compared to years past. Even now, studios are relying on sequels as tent-poles: Spiderman 3, Shrek 3, Pirates 3... etc.
That's why taking on "new" material often times is deemed riskier. The notion of a remake or "re-imaging" is that it already has a built in audience.
You think any studio is going to look at Grindhouse's lack of success and jump on the bandwagon and churn out their own? Do you think the Weinstein's are going to invest in a sequel? Do you think there's going to be a Texas Chainsaw Massacre 3 (I'm hoping it's comprised of the "lost years" where Leatherface is in a nursing home and takes verbal abuse from Nurse Ratched wielding a bed-pan. Now THAT'S horror).
All the studios want to do is make money, and in a sense, it's the old mentality that a sucker is born every minute that gets people in to the seats. It's only a matter of time before people in general wake-up and say, um-nope, you're not pulling the wool over my eyes again. It's only at this point, where, as they say on Survivor, "the tribe has spoken", that the people begin to really realize they collectively have control over what type, and what level of quality, movies are made in Hollywood. Of course, Adam Sandler seems to have made a career out of it, so perhaps all IS lost.