self-destructive

From self- + destructive.

self-destructive (comparative more self-destructive, superlative most self-destructive)

1. Causing injury to oneself or harm to one's interests.
   • 2020 February 25, Christopher de Bellaigue, “The end of farming?”, in The Guardian‎^[1]:

     Between 1997 and 2006, ownership of Glenfeshie passed between three Danish businessmen – and with it a self-destructive business model. Only by maintaining very high numbers of livestock could the flow of fee-paying deerstalkers armed with rifles be ensured, but because of the rising cost of gamekeepers and estate upkeep, Glenfeshie’s sporting operations were still making a loss.