Triumph the Insult Comic Dog.
Spoilers- These people are screened, paid, and usually highly motivated. I did a study with Plumbers to get a take on what level of subsidy would get people to opt for off-peak, high efficiency water heaters (I did other things than traffic, Cell Phones and Acne Cream for instance).
I did facilitating and was also ‘behind the mirror’ data recording.
The answer is regardless of long term cost, people will buy the absolute cheapest that will deliver all the hot water they want.
The not so deplorable-