Modern art is trash (excepting Dali, but that is my peculiar fancy). Modern music (art song) is trash. Modern theatre, so far as I am conversant with it, is trash. Anyone who would pay more than a day's wages for any of it (including Dali) is a fool
But is someone a fool when he invests $48 million, simply waits 9 years, and then realizes a gross profit of $90 million on that investment? That's $10 million a year, just for sitting on his keister. It's no different than flipping a piece of real estate.