I see what you're saying, that as soon as we obtain perfect samples that then we will turn to completely artificial sounds. Yes, I can see that happening as the ultimate irony in this field. (After all, Bob Moog has just released a new pure analog synthesizer. Now that is a classical instrument in itself.)
But on the other hand, I can also see something happening I wished had happened long ago - that the use of sampled sounds would stop being a technological marvel, and instead become a way a composer can do pure composition and orchestration. When you do those honestly, the playing field suddenly becomes much smaller. You actually have to know something about orchestration, and actually have to have a good melody or harmonic idea, instead of doing "that digital sampler sort of stuff." I think the whole focus should be upon the creation of pure music on a high artistic level, instead of acting as if you are extremely "cool" because you have the latest state of the art sampler equipment. It would be wonderful if this library would be the last one you had to purchase, because it actually created the true sound of the orchestra. Then you could just COMPOSE! What a concept!