Dude! If we could get paid to do drum corps, I think pretty much everyone here would quit their jobs and do DC for a living.
You're worrying about a problem that doesn't exist. When we're on ESPN in prime time, competing with (and beating -- ratings-wise) Monday night football, Survivor, Tommy Lee in a college band, and whatever other garbage is on during prime time,and getting paid enough to all get paid individually, then we can start worrying about separating amateur corps from professional corps. Until then . . .