You are talking about a handful of unicorns, not just large startups, and even then only a subset of them — Shopify with their widely successful monolith comes

You are talking about a handful of unicorns, not just large startups, and even then only a subset of them — Shopify with their widely successful monolith comes to mind. By definition their requirements in their current unicorn state can't be the default. Yet we collectively behave as they are and everyone needs dynamic scheduling (and the rest of the kitchen sink).