The system is not designed, and it does not assume indefinite growth. But another way to capture your point is to say our society strives toward constant improvement, which I don't really see an obvious end to. It is always possible to improve, isn't it?

You have to go deeper than that, I think in the end our whole species’ goal is growth at all costs and this is subconsciously baked into every decision we make…

Democracy. Vote yourself money.

What about a political outlook where nothing ever gets better in the future