So... it's the fault of every company not named nVidia for declining to use their own engine which after all these years is still nothing more than visual enhancements and not actual physics? And all these "pitchfork-wielding" gamers are also apparently at fault because they decided not to lock themselves into one brand and go with all nVidia hardware?
If you really want this PhysX-only game of yours to become a reality you should be looking at the guys who are sending you free hardware, not blaming the other half of the market that didn't choose nVidia. They (nVidia) only want PhysX to work on their own hardware, why do you think that is? They just want more people to buy more of their own products (a mutual goal shared by all companies with something to sell). The issue is that nVidia tries to mask this under the guise of PhysX, which is not
physics by the way, but strictly visual enhancements (which do look nice most of the time).
AMD cards
can run PhysX. nVidia says they don't want to have to support their hardware, and that's fine. But they didn't just do that, they (tried to) put in measures to block AMD cards from running it at all. Remember that driver "bug"?