Well, look at the new cheap stuff Snell (Previously Snell & Wilcox) has announced at NAB, pennies on the pound, compared to its classic hardware products, and those have gotten much cheaper since the last century. Snell was king of the hill in framerate/standards conversion. Teranex is still around, but is there still any competition left?! LetItWave moved its efforts from chips to high end 19" boxes years ago, for broadcast, in the same price range as Snell/Teranex, but disappeared from the scene years ago.
Indeed the Teranex guy at ISE told me that my impression that the chip was no longer in use in other products such projectors, because it simply was to expensive for those products. Last year I did come across some vague website from an Canadian company that still seemed to offer pc boards using the chip.