above (almost) everything, music is commercialism (is that a word), so of course people make albums with their greatest hits, because people will buy them much faster than normal albums if they`re not that big a fan. And beside who cares what other people listen to. Here in the Netherlands we had a band Within Temptation. I knew them for a long time already, they had 2 albums and about a year after the second album came out, the broke through in te music industry, and suddenly their videos came on tv and everybody loved them.
But I didn`t care about it. The music industry is just like that, don`t let it bother you.