In order to get to the majors or corporate, you have to quit jobs! Employers want to see that you are making strides to get to the top and the only way to do that is to move on from one to the other. Also, it's not a smart idea to quit any job until you have another lined up and guaranteed! When and if I get a job with an RJ company, I plan on sending numerous resumes out to other companies while I'm there. There's always something better and employers know this.