Advertising trope where a company admits they've had trouble in the past, but if you buy their products now you won't be disappointed. Basically, they are saying they have what it takes to Win Back the Crowd from whatever caused them to leave in the first place, but rather than silently do it and let word of mouth take over, they've decided on a less subtle approach. If not done with the correct level of self-depreciating humor, it tends to fall flat.