@yoyoyaya We're peas in a pod. Nice to meet you.
I'd like to share one more observation if I may. Once a musician achieves some degree of notoriety, much of what you see on stage has been given to him by smart marketeers in order to promote their product.
I believe the same is true for consumer gear a really famous guy, say, like Rick Rubin would own, I'm sure his high end system was at best sold to him at cost and most probably way less. Hell, I'd give Rick Rubin a really nice system if I could hang with him for a few days. What musician with the means wouldn't???