I'd argue that resource availability is already high enough to alleviate scarcity for most people, and that most scarcity today is artificially generated, because of profit.

We won't achieve post scarcity, even with widespread automation (if AI ever brings that to fruition), because we haven't yet fixed the benefits that wealth brings, so the motivation to work toward a post-scarcity society just doesn't exist.

Kind of a chicken and egg problem.