> Walmart earns $13k of profit across each of their 2m employees. One could make the argument that if Walmart had to pay each employee an extra (say) $3k annually [1], management would instead choose to shut the whole thing down and return capital to the shareholders, which would be a choice available to them.

Honest question: why not make it $5k or $10k?

Is there something magic about $3k that leaves Walmart employees unaffected, and — if so — why will $5k not achieve this?