But it 's a `` norm '' that is rarely acknowledged . Some food products are so polite that the public may not notice . But Burger King commercialized its copying of McDonald 's Sausage McMuffin . Burger King claims : No direct feedback from competitors . In 2007 , McDonald 's introduced chicken sandwiches similar to Chik - fil - A 's .
Some food products are so polite that the public may not notice . But Burger King commercialized its copying of McDonald 's Sausage McMuffin . Burger King claims : No direct feedback from competitors . In 2007 , McDonald 's introduced chicken sandwiches similar to Chik - fil - A 's .