If the restaurant sector is doomed, why are the pizza chains so hot?

Papa John's Pizza: https://www.zacks.com/stock/quote/PZZA?cid=cs-soundcloud-ft-pod
Domino's Pizza: https://www.zacks.com/stock/quote/DPZ?cid=cs-soundcloud-ft-pod
Pizza Hut: https://www.zacks.com/stock/quote/YUM?cid=cs-soundcloud-ft-pod
Papa Murphy's: https://www.zacks.com/stock/quote/FRSH?cid=cs-soundcloud-ft-pod
Casey's General Stores: https://www.zacks.com/stock/quote/CASY?cid=cs-soundcloud-ft-pod

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