As the guys above are saying, do some homework of understanding the two different sectors, and chose what makes you happy.
If you come to corporate, stand your grounds, be a professional pilot, not a chauffeur, seek the best jobs, and don't throw you buddies under the bus.
There is a very important thing to consider: you can see pilots leaving GA to go to the majors everyday, but it will be very hard to see a pilot voluntarily leaving a major to go GA. This must be meaning something.
Nevertheless I know a couple of guys that would be absolutely bored with an airline job, they do want hands on management of the plane they fly, and they would never consider anything else than a corporate job.