i completely agree with you. it's unsafe and unfair to the parents to shell out $1000 (probably more.) (And maybe 10% of teams this late in the season actually were restricted 5 competing up just for fun - sometimes it works though - ie. stingray amber and brandon white)
Since the progressional idea would unfortunately not work (counties, states, regionals, nationals, etc.) I think the only way to truly combat this is a minimum score on the WORLDS scoresheet, less at large per paid ratio (I'd say 1, the USASF probably needs at least 2 for $), and allow companies to refuse to give out bids. Do they really want to be represented by some of these teams?
IMO, it is unacceptable that teams scoring in the 70s out of 100 are receiving bids to our most "prestigious" event.