Armin, you do have a point, but there is a place for equipment of this kind of resolution.
The most expensive enlarger system I have used was purchased in the very early eighties by a company I worked for at the time. That enlarger and it's two lenses had an approximate initial purchase price of $150,000 AUD. This price did not include installation, which was about 3 weeks work by two technicians. Believe me when I say that for normal enlarging work, it was an eye opener.
At one of our trade houses we had a specially commissioned reproduction system, effectively an enlarger designed for extremely high resolution and colour reproduction for film. This had an effective cost of $250,000 AUD to our firm.
Then we start to get into the expensive stuff, try a little over $1,000,000 AUD for a gallery camera in the eighties.
The lenses on this camera were not available to anyone else, they were manufactured to state of the art standards and the manufacturing I know, was from Germany and Japan.
I believe the glass was manufactured in Japan using the finest sand in the world, I know the lenses were manufactured/assembled in Germany. Testing and adjustments of the lenses was carried out in the USA using LASER spectral analysis (or something that sounded like that from memory) to fine tune the glass.
This camera was specifically designed for the highest quality colour film separations, that money could buy.
Mick.