it really depends on what the end goal for the group is.

there's plenty of musicians/performers all over the world whose only goal is to be able to perform often enough to feed and house themselves. having number one hits and being a household name is not what they want.

it's not possible for every group to put out a number one hit or even a top ten hit. but as long as their company and them are making enough money to survive then why shouldn't try?