I'll raise your spark for complete destruction. Here's an incomplete list that I keep around of the mechanisms that I've observed so far that have played a big part in the decline/destruction of an engineering team (and product thereof): 1. Too-technical leaders: As startup scales, there can sometimes be a mad dash to fill new leadership roles (e.g. VP of Eng, Arch, CTO, etc.). Super-star engineers present at startup…
And for 4, the opposite is even worse, aka "no management". So when you develop something but it turns out the outcome was not needed or in a different way.