[sumtechguy]

Some economists maybe? Perhaps, if you think the only thing to gain is money? Some people do silly things because of other reasons (fame, ego, obligation, greed, retribution, etc). See recent 'stonks' as a good example of people actually spending money for non monetary gain. It is these other factors which feed into many economic models unknowingly. When those variables move they can radically change a model and cause it to do funny things.