Israel is happy to be the sacrificial anode for more or less anyone willing to pay and not immediately counter to Israel's own geopolitical interests. This is a service they offer to the world, not just America.
America simply happens to be the largest customer among many.
It's a service that they offer first and foremost to themselves and against anyone else, including America.
Can we even prove it hasn't already happened?
But could they? You are somehow assuming that all this "dirty work" as you call it is only done on behalf of others and not used to ensure continued ("unwavering") support for themselves.
Also, if your parable about Ticketmaster were true. But it isn't. Most artists do indeed dislike them; the paltry kickback isn't worth the... bad blood... it sends their way. And it's weird that your read is that most artists secretly hold their fans in contempt. I don't know what kind of person just assumes that of others, except that they're that way themselves, maybe.