While I am not mad we get some cheerleading shown on TV, the stuff currently on TV is paid for by Varsity (it is only Varsity stuff that I know is shown on Fox, ESPN, and ABC). It is more like an infomercial, not an actual TV show. The reason the Majors would not be on TV is Jamfest wouldn't pay for it to be.
And, in reality, I am not sure why any cheerleading is shown on TV at all. I would save the money and show it on the internet. Put some ads in front of the videos, allow us to watch full routines, make it HD, and make sure Justin Carrier commentates.