[ulugbek]

Only way you compete with Wall Street is you increase the utility of expected payoffs, not just the wage. People who are going to WS have different risk profiles than entrepreneurs. You can have low participation in entrepreneurship as long as participating ones are competitive and innovative. It is better use of talent and time if those who would have failed anyways (because they don't have the guts, etc) go and make themselves useful elsewhere.

[orijing]

I think you have it backwards. It's not about max_a U(E(a)), but of max_a E[U(a)]. Otherwise insurance wouldn't work.

Let's illustrate with an example. Suppose you buy theft-insurance, there's 10% chance of being robbed and the cost of robbery is $100000. Then, E[a] = 0.1 * -100000 = -10,000. So you'd be maximizing U(-10000). This is different from maximizing E[U(a)] because in this case it's 0.1 * U(-100000) + 0.9 * U(0).

It's different if you are not completely neutral.

[ulugbek]

You are right