I for one would sure like to see an inexpensive 4000 ppi scanner with good software, but unlike many of the folks here, I'm not so sure that all is lost just because Nikon is no longer producing scanners. Or Canon with their FS4000US or Konica-Minolta with their various high-end units. Plustek is just about the only ~4000 ppi 35mm scanner left that I know of that is still in production. And it's even priced fairly reasonably, but I have yet to see scans from one, so I'm still withholding judgment on just how good it is. Now, it seems to me that all of these scanners have been based on rather old technology by today's standards. And as others have mentioned, the hot ticket would be to use a chip such as is used in modern DSLRs. Now, it also seems to me that, from a design standpoint, such a scanner would actually be easier to produce. The high-precision stepper motors, for example, wouldn't be necessary, since such a sensor with the right lens would be able to image much larges swaths of the image area than a traditional scanner with it's one-line-at-a-time scanning. It would be much faster, too. Am I wrong?
So it seems that this technology might be attractive enough for an independent to come out with a product. Especially when the costs for CMOS sensors or CCD sensors or whatever drop to such a level where they can be included in the product's costs for a reasonable sum. It is inevitable. Sooner or later sensors will get cheaper -- even big ones -- and will cease being the costliest component of a DSLR.
As I stated before, there might not be many folks shooting film anymore, but there are billions of negatives and slides out there, just waiting to be digitized. So this can and will be a steady market for years to come. It may not be a red hot one the way digicams have become, but it will be steady. And besides, if the scanners are built as flatbeds with film capabilities, they can be used for other things, like scanning documents, for example. And here's another thing -- something I've already run into. Say you start out with a scanner that you think does a good job, and you scan a bunch of slides. Then a better one comes out, so you get it, and then what? Why you rescan those same slides, of course. And THEN yet another scanner comes out and you can't help yourself -- you gotta have it. So you buy it, and once again, rescan those same slides. Because you want the best possible resolution and image quality out of your slides, you'll keep upgrading your scanner in the hopes of achieving that goal. Now, this is something I've already fallen victim to, which is why I mention it, and if it's happened to me, then I know it'll happen to others as well. And there's no reason why it won't also happen with future technology.