You do realize that unstructured gathering only provides a subsistence diet, right? And also typically requires seasonal migration? And basically all of your time every day?

Which is to say, rather than being "free", gathering costs the time of almost every person in a society, and also requires that society to be regularly mobile, and also shortens lifespans due to malnutrition.

Still required work to harvest it.

And to store it for the winter.

If gathering is free for you, there are jobs available where you are basically a gatherer. Go apply, you could earn free money!