Somehow, it isn't surprising that they stopped doing the Ilfochrome process.
Slide film is less and less used. People don't care that the print is incredibly awesome looking. All they really want is to recognize uncle Harold on the pictures.
Commercially, advertising companies go for the cheapest, something the Ilfochrome process definitely isn't part of...
A few years back (well, more like around 20 years ago), when Ciba sold the process to Ilford, I checked the price of a print. An 8x10 lab print was going for about 40$ ... nowadays, a decent 8x12 on Crystal Archive is around 4$.