Until the charges start getting more difficult to reverse, of course. Or until you fail to notice your accidental purchase for longer than X amount of time. Or

Until the charges start getting more difficult to reverse, of course. Or until you fail to notice your accidental purchase for longer than X amount of time. Or until you have some bad luck preventing you from doing anything about the accidental purchase for longer than Y amount of time. Dark patterns with potentially tens of thousands of dollars of downside should always be named and shamed, even if they're not immediately dangerous. We can't trust circumstances will stay the same forever. There's a reason nukes are difficult to fire.