Well, I agree with you but...

Lots of clubs simply don't want to ask people to really commit to the event. Recent examples are
Spring Fever
Gulfport
Tradewinds
Lots of the Florida Regattas using the free registration applet.

I can understand the half measure if the regatta was just about racing. no food to purchase, no give aways to buy, simple trophies and a track record for a turnout of the usual suspects. The club members might be willing to sit out on the RC boat in lousy weather for the few sailors who do show up.... IMO this is a recipe for slow death. If it works for them... OK...

My view is that Clubs are NOT SELLING A REGATTA SERVICE...

Clubs are part of the sailing community's joint effort to create a vibrant regatta circuit. Every organization and individual must pitch in and do their part. No excuses.. no avoiding your responsibility.