While it may be rational motive to seek to secure personal profit, it is actually totally irrational to pay a high price for something when the value of the the thing is based on irrationalities.
A tulip has no physical value other than as an ornament, can’t eat it, can’t smoke it, can’t use it to do work.
The only value a tulip held was its ability to increase in mercantile value through mass suggestion.
The rationale, that mass suggestion represents truth, is the very definition of irrationally.
It is what the market uses to convince people that they do not need to worry that the planet is warming, that natural resources and energy are depleting at accelerating rates.
If you didn’t consume, someone else would profit from your lack of consumption.
The main motivating factor of the stultocracy.