Which corporate structure one uses is dependent on revenue, yeah. All corporate structures serve to sequester revenue and limit liabilities (tax and otherwise).
Tipping is a positive experience, in my view. It gives me a chance to touch base with the employees who make my night go smoothly, and to show appreciation for their efforts. It definitely makes a favorable impression on them, because many acts don't bother. That definitely results in more gigs for my act.
But, I'm American, and really only play in the U.S. and Canada, where tipping is also appreciated. I've played in Europe, and I knew that tipping was frowned upon, so I didn't, but it felt strange. Nobody working any of the bars I usually play is making less than $15/hour as a baseline.
I don't care if my fellow players are smoking cannabis or snorting cocaine, so long as they can handle themselves. I don't mind if they're using heroin, so long as I don't know about it. Fired on the spot for methamphetamines. I encourage moderate drinking, especially when we get the audience to buy us drinks.
If you're in a new act, you don't have to trust your fellow players so much as assume that they're acting in good faith, as professionals do. It almost always works out in everyone's favor. After more than 3 decades of playing, I really only have 1 horror story?