You are still lucky - you have a certain type of people who keep buying your music - but then you can get typecast and have to keep making that same music, and you can change only slightly. It's risky to bounce around and change your type of music.
“A farmer travelling with his load Picked up a horseshoe on the road, And nailed if fast to his barn door, That luck might down upon him pour; That every blessing known in life Might crown his homestead and his wife, And never any kind of harm Descend upon his growing farm.”