If human time is the only truly scarce resource then labor is the only source of value creation.
Capital is just accumulated time that can be redeployed.
Network effects, automation, machines, knowledge, all are only optimizations of human time.
Entrepreneurship is time management, optimizing the value creation per unit of time for a group of individuals.
This leads us to the issue we see in modern societies. Once we move to post-scarcity and can optimize our way out of working to provide for our animal needs, we see the elevation of false problems and general ennui.
We, in effect, always need to determine what the value of our time is. What deserves our attention and consumes the only finite resource we have.