I really don't see Matrix borrowing that much from Neuromancer and both would be very different stories (in Neuromancer's case, a machine trying to hack itself out of its designed-in constraints), but I still believe Neuromancer is almost impossible to film.

I'll never forgive The Matrix for dumbing down the idea of running the AIs on the organic brains (Agent Smith's disgust is evident) and turning it into using humans as power generation devices.

Also, there is no way Neuromancer can be made into a 90 minute script. It's miniseries material, at least.