Airlines: you fly airplane from point a to point b. You have dispatchers, schedulers, gate agents, flight attendants, and many others doing a lot of the work for you. Yes, you are PIC and have the final authority but the support you have is huge.
Corporate: you are all of the above. Every detail is riding on you, expectations for perfection are all on you. The guy in the back is not just a nameless paying passenger. He (or she) is not riding on an airliner because he can afford not to.
Airlines: you know your schedule, play by the rules, remain anonymous if you want.
Corporate, schedule varies wildly, rules change, and the boss knows you. But the benefits of the corporate lifestyle.....oh boy, ain't never had nothing so good like that at the airlines!
I've been doing this for nearly 30 years, loved the airlines but very glad I'm experiencing the other side.