The tooling for managing the "lower" layers is progressively worse / slower / harder the closer to the metal you get, so you usually are paying a heavy premium

The tooling for managing the "lower" layers is progressively worse / slower / harder the closer to the metal you get, so you usually are paying a heavy premium for convenience / DX. Only very specific serverless products where the provider can bin-pack you with other tenants allow them to possibly offer lower prices.