Daves a great drummer, his side projects have shown him doing some crazy stuff, especially his work with Mike Patton.
It is sad though things boil down to money, in this day and age where people mainly download albums, the only real money is from touring and sponsors really, so to only get 10% is dodgy. Split that 4 ways and it's chump change.
Normally behind these kind of things will be one main person collecting the majority of the revenue, probably a manager or one of the band members.