6. Taco Bell
Taco Bell is generally not viewed as a healthy place to get an inexpensive meal. Instead, it is well-known as a place where you can be pleasantly-full for a few dollars. That option will certainly be maintained, but in addition to getting the consumer to “think outside the bun,” Taco Bell is inviting customers in to try its new healthier alternatives as well. Either way, this Mexican-style fast-food joint is doing well, rolling $6.9 billion in revenue.