The problem is when you are one one cog in a much larger machine. My team has a specific launch date for a major release of our piece of the product. The ten other teams around us depend on our release, and are going to meet their deadlines. The loss of one piece is the loss of the whole project.

Ideally, one should never let this situation happen- but it will.

Do I force the whole company to slip? Or do I accept that my piece is going to be crap at launch, but follow up and make it better later? Both options exist, and should be on the table. Which you pick is really up to the situation.