In economics, a demerit good is "a good or service whose consumption is considered unhealthy, degrading, or otherwise socially undesirable due to the perceived negative effects on the consumers themselves".[1][2][3] It is over-consumed if left to market forces. Examples of demerit goods include tobacco, alcoholic beverages, recreational drugs, gambling, junk food and prostitution. - https://en.wikipedia.org/wiki/Demerit_good

https://economics_finance_en_ru.academic.ru/20637/merit_goods