That's a non-starter.

Meaning

That's an unacceptable or unrealistic proposal.

Examples

• John: 'I propose we increase executive salaries by 20%.'<br>
• Alice: '<b>That's a non-starter</b>; we can't afford it given the current financial climate.'
• John: '<b>That's a non-starter</b>; our competitors are already gaining market share.'
• Alice: 'Let's delay the project launch indefinitely.'<br>