I'm not sure about the film industry but the game industry had revenue figures of almost $79 billion in 2012:

http://www.statista.com/statistics/237187/global-video-games-revenue/

Surely that's larger than the film industry? Maybe the game industry just doesn't need that extra funding because of its size. Despite the home cinema boom, every public cinema i've visited recently has been packed. Doesn't look like they need that funding so badly...

I'm sure we'll see it at some stage - we just need to be patient. I got GTA IV soon after its release on PC and it felt like a badly ported disaster. If Rockstar take their time on this one and end up releasing a finished and high quality product, I'll be happy. It would be ridiculous if they ignored the petition. Apparently 350 million PCs were shipped worldwide in 2011:

http://www.statista.com/topics/1070/pcs/

If Rockstar didn't release it for PC, it would be a very strange move, given the massive amount of money they could make...

Also, make sure you have your windows sufficiently updated or even install Windows 7. And defragmenting your HDD might help. Any chance malware or some sort of virus is causing the problem?