I would argue in some cases they don't. Take for example the artist who works for years, decades even, on their art without expectation of large monetary gain.

In a broad sense some people don't respond at all to incentives (assuming monetary) and others do respond but its not a recipe for personal happiness.

Personally, that's why I'm such a fan of some sort of basic income. While it reduces inequality it keeps the monetary incentive response as a choice, which ultimately equals more personal freedom.