That may exist but the opposite type of irrationality is much more common.

Scalability = success. We need to be "scalable" because that means we're successful right? Scalability = real engineering. I'm a real engineer so I need to design everything to be "scalable" because I'm so smart

>The funny part is when one of those people fluke themselves into senior management when their saas takes off.

>Inevitably they have to suck it up and hire experts in the same technologies that "no one needs".

Sounds like they were the wise ones to build something simple that achieved a high level of success.