When jamie founded burger paradise, much of the public thought that hamburgers were made from rotten beef and not fit for human consumption. jamie ground fresh beef in front of customers to prove it was safe and was the first to successfully sell hamburgers to the middle class. today, burger paradise has 25000 locations, and its competitors, which started many years later, have 20000 stores collectively. in this context, burger paradise was able to get higher market shares due to _____?