People usually are conforming their interests to their society. Most people are not dreaming of being baroque composers today, but perhaps audio engineers, or whatever. The Beatles are a product of their time. They saw what was being encouraged, and it influenced them. A Beatles does not exist today because our society does not encourage it.
Frankly, there exist many contemporary painters who I consider clearly superior to Van Gogh, and their society thought so as well. For whatever reason, our society doesn't value them as much as him. Our views have reversed.
I do not know if this makes sense at all. I'm sure that I'll see this tomorrow and wonder what I was thinking.