What did the "Web Hype" do for Snakes on a Plane, oh thats right, NOTHING. Just like some bad press will not kill the PS3.
That's because Snakes on a Plane web hype also appealed to people who leave the house a lot less and are more apt to wait and download then pay and sit next to joe-joe the idiot circus boy and his ringing cell phone.
To deny that "web hype" has any effect on the real world is just silly. Ask those folks in Alaska whose little pork project just fell apart if blogs have power over public opinion. They will undoubtedly say, "Yes."
This doesn't mean that the PS3 will fail, and by all accounts "SoaP is not a "failure." But to deny that the Internet bailed out what was likely to be another Deep Blue Sea is inaccurate. The impact was nowhere near as big as expected, but people certainly saw that movie because of hype. Imagine what the box office would have been *without* the hype...
Nevertheless, inaccurate box office projections will likely hurt some people. It doesn't mean that New Line Cinema or anyone else is going to "fail." It does mean that someone somewhere will probably lose a job or two. It does mean that some people with lofty endorsement contracts or marketing tie-ins may not make as much money.
So too, it could be with Sony and negative web hype. This does not necessarily mean Sony dies. It just means they ain't in first. Internet hype has power. It is important. It's just not magical, or special.