Lemon socialism is a pejorative term for a form of government intervention in which government subsidies go to weak or failing firms (lemons; see Lemon law), with the effective result that the government (and thus the taxpayer) absorbs part or all of the recipient's losses. The term derives from the conception that in socialism the government may nationalize a company's profits while leaving the company to pay its own losses, while in lemon socialism the company is allowed to keep its profits but its losses are shifted to the taxpayer.
Mark J. Green coined the exact phrase in a 1974 article discussing the utility company Con Ed.