Often you will realize you are building the wrong product or feature.

For startups it is straightforward to pivot. At a big company, corporate inertia frowns on that level of disruption and so the tendency is to iterate on doomed products with no path to success.

At big companies the valuable skill is then to figure out how to convince people the plan is bad but not the people. Or get skilled at deserting the sinking ship before it sinks.

At startups, it’s about iterating to PMF.