getting away with it; profiting by escaping
Refers to the situation where someone avoids punishment, payment, or responsibility and benefits from doing so. Often used critically.
It's a problem if people can get away with committing crimes.
Under this system, those who don't pay end up getting away with it.
Compound of 逃げ (nige, 'escaping') and 得 (toku, 'profit, advantage'). The reading とく for 得 is a common nominal form.