I was incorrect about the gymkhana not being against a clock so it works there but there really isn't many championships at a high level for it. It's mostly club racing.
I'm not a fan of freestyle motocross. I feel anything that has judging will get results that don't always reflect the right outcome. A clock won't lie.
No NOT EVERYONE gets paid to compete in rally. Most of those guys are paying for it themselves. Ken Block funded his way to where he is from his clothing company (DC Shoes).
Amateur teams, (which beside the Rockstar and Subaru crews) most of rally America is, sees self funding to compete. Also, many times if an amateur gets prize money from an event, it isn't enough to cover that weekends expenses.
The ratio of drivers that get paid to drive vs those that don't is like 10%.