For people of a certain age, (as in this writer), the phrase “burger wars” means McDonalds (MCD) versus Burger King (QSR). Over the years, that rivalry was diffused with the addition of Wendy’s (WEN), Jack in the Box, Sonic, Carl’s Jr., etc. and then updated and upgraded more recently with Shake Shack (SHAK) versus In-N-Out Burger,…
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