My problem with "getting more productive" is that the gains nowadays are achieved through automation (capital investment in general) which pretty much guarantees that the gains from the increased productivity are captured by the capital owners. So even if we double the productivity of the economy, there is no guarantee that this will improve the lives of most people who depend on salary or pension. There must be some form of redistribution to allow sharing the gains of productivity but this has been a taboo in the US (and many more places) since the 80s and I don't see this changing anytime soon.
Even if it were a problem or resources, the solution is invest now in creating more resources, not in "saving money".
I think that part of the reason it's a taboo, is because the officially pushed narrative is designed to hide that, in many instances, is a problem of redistribution more than a problem of resources.
For instance, in USA, the "public debt crisis problem", that it's mainly meaningless, distract from a honest debate of the real issues.
