Well, Flintstone, I don't get a free lunch at my workplace, and neither do most other people. How difficult is it to bring something from home or the local 7-11? I'm sure the McDonald's break room has a crew fridge. If I were surrounded by burgers and fries everyday, I would definitely be brown-bagging it most of the time.
As for any experimental "co-op" McDonald's franchises: Remember! If you take out too much capital, it will wound the business, and this will put everyone at risk! And "stealing from yourselves" may mean you'll have to order beef, buns, etc. more often! Not to mention that this can affect your "employee-owned" franchise's health, too!