There's a lot of money in the entertainment world. Movies, in particular, can be powerhouses, generating hundreds of jobs and costing several million dollars with blockbusters pushing 100 to 200 million to make. These hit the theater and require a set number of people to see them in order to make the investment worthwhile. When they don't, the criticisms get pretty intense up to and including ruining a director or actor's career in the process.
The same holds true with music. The business side requires a lot of an artist. They have to be aesthetically pleasing to look at and if they don't have a gimmick, then forget about it. Do they stand up there and play a guitar with a scruffy beard and a flannel shirt? Not enough anymore, get your ass to the coffee shop. Without an extreme quirkiness or something to make an artist stand out, they're not marketable.
Author of several books, composer of several CDs. Please check out the rest of the site for some of my work.