The true value of an entertainer, whether it be a musician, an artist, a film director or so on, is what comes out of his audience receiving his product.
An entertainer can create a song that reaches the top of the charts and is listened to by millions and millions of people, but if it doesn't result in the listeners doing something or changing in some way, it doesn't hold value in the same way that a relatively unknown entertainer's mixtape does if that mixtape motivates a listener every day in his successful drive to becoming the leader of a nation. Because we can't realistically account for all of these results, we'll never really know the true value, monetary or otherwise, of an entertainer. When you consider this, Snoop Dogg may have more money and fame than Tha Don, for example, but he may not necessarily have more value as an artist. As such, we must not compare artists by their direct financial revenue, but rather by the chain of events they create by creating.
No matter your status, whether as an artist or consumer, you can apply this to your life by approaching all entertainers equally. Recognize that their talents and skills are different and appreciate the ones who do their craft the best, but do not determine the value of their work by financial gain - evoking positive change is what makes a work legendary.