Which mythological concept has most directly influenced modern retail customer loyalty programs?

Before modern marketing experts, there were gods and mythological figures who mastered the art of personal branding! From Hermes' recognizable winged sandals to Thor's mighty hammer, mythological figures understood the power of consistent imagery and storytelling. This poll tests your knowledge about how ancient mythological marketing techniques influence modern retail strategies. Can you identify which famous mythological approach has been most influential on today's customer loyalty programs?

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The Norse concept of 'Frith' (mutual protection between a lord and followers, with rewards for loyalty)
The Greek practice of 'Xenia' (hospitality to strangers)
Egyptian 'Ka' offerings (providing sustenance for the afterlife)
Celtic 'Geis' (magical taboos that restrict behavior)