Interesting question.<p>I would think the answer as of currently, is no.
That is less because forcing that restriction would be legal or illegal, and moreso because when you buy food at in-n-out you are not waving any rights or signing any document. If for instance, before every sale of a burger they made you tap a screen saying &quot;I agree this purchase is not for delivery&quot; then yes, the delivery person&#x2F;service could be sued for tortuous interference. Unless that happens, there is broad restrictions on what companys can do to restrict secondary sales.<p>The only caveat could be that restaurants are regulated for quality and health. If a lawsuit could prove that the delivery services are actually re-selling the food instead of merely delivering them, there might be a case there. Especially because I highly doubt these services have the relevant licenses to prepare and sell food. Its possible though.