I would simply argue that it is a competition, and in theory, the competitive portion of the events should be about who the best dancer is, not who does the most to support the comp. Now, I've come to appreciate that organizers do need to make their bottom line, and that may require at least some prerequisites for the events. But I genuinely struggle to see why anyone would want those to be anything other than as small as practical. Don't you *want* to test yourself against as large and robust of fields as possible?
Of course, none of that should be taken as an objection to the idea of the larger spenders getting perks outside the competitive events. VIP dinners, gift baskets, top student awards to the extent that they're influenced by entry volume - whatever makes y'all happy.