Examples:

• His proposal to increase taxes on the middle class is a dead duck.
• That business venture is a dead duck; they will never recoup their investment.
• After his scandalous behavior, his political career is a dead duck.
• The company's outdated products are a dead duck in the current market.
• That brand is a dead duck; consumers have lost interest.
• That project is a dead duck unless they can secure additional funding.
• The team's chances of winning the championship are a dead duck.
• That politician's campaign is a dead duck after the latest scandal.
• The company's poor reputation has made their new product a dead duck.
• The restaurant's poor reviews have made it a dead duck in the competitive industry.
• The film's poor box office performance has made it a dead duck.
• His outdated management style has made the company a dead duck in the eyes of employees.
• That fashion trend is a dead duck; no one is interested anymore.
• The software's bugs have made it a dead duck in the market.
• That celebrity's career is a dead duck after the controversial remarks.
• The car model is a dead duck due to its low safety ratings.
• The company's lack of innovation has made them a dead duck in the tech industry.
• That argument is a dead duck; there is no evidence to support it.
• The idea for a new amusement park is a dead duck without investors.
• His plan for the business is a dead duck; it ignores the current market trends.
• Due to enough unfavorable intelligence about the enemy, the attack they were intending to launch was a dead duck right from the start.