No, it's that we are too idealistic and are turned off by the messy, immoral greater world in which the management club makes their money. We want things to be beautiful and fair and so we spend our time constructing abstract fantasy lands in miniature.

The great irony, of course, is that the messy and immoral world intrudes even there because rational idealists can't find consensus and are subject to the biases that require conventions, institutions, politics and regulation just like the legal and business worlds.

If we were rational you might say we chose "playing with fun toys" over "controlling thousands of people and millions of dollars, and influencing millions of people and billions of dollars". Perhaps, for some people, that is indeed the rational choice if you don't really trust yourself.