Revolution, one thing though that helps with revenue in the 6&U vs. the older high schoolers is that this 6&U age group tends to bring in more spectators and spending money. You will find at the younger ages you will see both parents, siblings, grandparents, uncles, aunts, etc. attending the event. This tends to lessen as the wrestler gets older. Now that my son is freshman in high school only myself or my wife normally attends most of his meets. His sister has her own separate athletic events at the same time that the other parent attends.
By the way, I agree with you that there are way too many weight classes in both 14&U and 16&U. I think both age groups should go to high school weight classes, especially 16&U.