Look at Dean Wilson's issues this year. Had a 450....didn't have a 450. Still eligible for lites, so he does that to keep current and viable for sponsors. If he hadn't been eligible, then what? Buy a stocker and try to make the main?
Not quite as bad as in motogp, but it does boil down to few competitive rides available.
Life is not measured by the number of breaths we take,
but by those moments that take our breath away.