This depends on what you are building and what your goals are. What pg is referring to is how to build transformative companies, unicorns if you will.
There's plenty of businesses where you are simply optimizing a funnel, and driving more revenue at all costs is fully aligned with the goals of the company
I'm nearly always building early stage companies, where even the dev and operational overhead of charging for some added extra is not guaranteed to be paid for by the money collected.
There's plenty of businesses where you are simply optimizing a funnel, and driving more revenue at all costs is fully aligned with the goals of the company