It's the type of trap that only works if you agree to allow it to work.
You might call it Sunk Opportunity Cost Assumption, mostly fits.
Sometimes the best available move is physically escaping, just getting up and walking away and continuing until you find anything better than where you were at. For some weird reason, that move feels like giving up to people, until they actually do it and it works. This move is sometimes appropriate for jobs, relationships, addictions, violent circumstances, toxic social groups, politics, and so on.
If you've got next to nothing, then you have almost nothing to lose, and that can be a profound amount of freedom if it's seized. It's not always the right move, but sometimes the only winning move is not to play. Go find a better game.