However, success is never just one thing. Because there are plenty of people with the same or greater level of support that Grimes had that never make it.
But the point is that there are plenty of people as talented or more than Grimes who achieve no success at all.
Success is more often than not the result of avoiding catastrophic issues than it is from anything you actively choose. And the more chances you have to try, the more chances you have of doing something that avoids catastrophe.
Hard work, support, talent, luck, determination, these will all help you, but none of them will guarantee you success. Not singularly or in combination.