I think age-ism is part of it.<p>However, being an Enterprise dev myself (kind of), I feel that Startups don&#x27;t think Enterprise devs &quot;move&quot; fast enough. They are too busy abstracting things and trying to get to the holy grail of the &quot;perfect&quot; architecture.  Startups don&#x27;t necessarily care about that right away, but enterprise devs have been steeped in it.