Some may even look to make improvements on the original. It can be for other reasons like notoriety or personal challenge for pride and maybe even some kicks. Think about this comedians can get more laughs if they are good at imitating some one else right? If they are really good at it this helps bring more people to their show. Just as is done with so many other things that are made there is always a group of these interested individuals that like to do things themselves. These people will go out of their way to copy favorite recipes from all of these restaurants. I would venture to say that if one were to interview many of these DIY (Do It Yourself) people it would be primarily in an effort to be able to save money as a main reason initially.
What typically happens when you see an interesting recipe that youd like to save and try out at some future date? You grab the closest piece of paper and quickly jot it down. You then stick it on your refrigerator or place it on the countertop telling yourself that the first chance you get youll put in your recipe box or favorite cookbook. But then what happens? It gets lost or misplaced and you never get the chance to try it out. Another scenario popular among at-home chefs is trying to save your favorite recipes. It may even be a family recipe that has been passed down from generation to generation. The way these recipes are usually stored is to be written down on 3" X 5" index cards and placed in an index card storage box. Or they may be written down in a blank recipe book. This is better than having them written on loose pieces of paper but there are also some major flaws with this method.
So the journey began in search of restaurant recipes. Most restaurants do not give out their recipes and why would they? They might lose a return customer if they did. I do see some restaurants that are selling some of their menu items in the grocery stores more than before but sort of limiting it to just a few items. I have also read about a person that would ask the cooks for their recipes and how some might spill the beans once in awhile but again fairly limited results. I remember one time my wife and I were at a Dennys restaurant late one night and how much we enjoyed their marinara sauce used with the mozzarella sticks we had ordered. We asked the waitress about it and she did check with the cooks on that but they really didnt know much about it and we thank her for trying.