Many anarchists recognise scarcity and admit it's a difficult thing to deal with fairly. But instead of assume they have the one solution and enforce it on everyone else, they leave it to more local levels to agree on a reasonable way to ration scarce things.

You could also easy make the opposite criticism of capitalism: it doesn't recognise abundance and builds almost everything on (often artificial) scarcity.

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Free banking ("everyone making up their own money") was never the disaster currency monopolist would like you to think it was.

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You say locally made up rules that apply only locally don't scale. Does it really scale to have locally made up rules (because they always are) that are enforced globally?

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But yes, many anarchists do exactly what you propose: they experiment way different ways to collectively make decisions. They don't shun all rules.