The post I responded to acted as if failed #1 picks was a habitual thing. That's what I responded to. If he had said the team overall has drafted very well, but missing on Taco hurts, I would have responded differently, or wouldn't have responded at all.
As for the analogy to your line of work, of course not every industry is the same, and there are gains and losses in all of them. The key, as always, is how the business responds. Clearly not every business automatically struggles to survive every time they miss the mark on something.
As for the NFL, history does not bear out the idea that a failed draft pick is automatically a devastating blow. Part of that is because the draft is not an exact science for any team. Not even for the Patriots, who have had their share of bad picks. There simply is no way to bat 1.000. In the end, a bad draft pick hurts because it represents a missed opportunity to improve, but if a team is having more success drafting than its peers it is a successful drafting team.