I think under both scenarios you're talking about public funds, maybe not so much from the taxpayers' perspective but from the band members' perspective.
When a band owns a business, whether it's a gas station or a casino or some kind of other enterprise, it's the collective members of that community who own it.
What we've heard loudly and clearly from grassroots band members is that if money from, say, a gas station is going to pay the chief or a councillor, band members want to know about that. They want to know the total compensation package that their elected officials are receiving.