Corporate loyalty

I was just sitting and talking with my wife about an issue which I find very interesting, Corporate loyalty. I believe this issue spans all realms of business but I am concerned with the pharmaceutical industry because that is what I know. Who is looking out for me? The simple answer is nobody except yourself, how sad is that. What makes me more upset is I feel myself becoming disloyal, saying things like "it's the same game no matter what team you play for" and "if I get a good enough offer I would consider it," is this terrible? I always wanted to work my way up within a company and be a success story, but more often than not these days in order to move up you need to ship out. Is this because companies feel they can fill jobs with any college grad? Does experience mean anything to the company you work for rather than the company that is trying to steal you? I am saying this because I find myself in a position where I can do one of two things I can stay with a nice small company that I have been working for and where I enjoy my relationships or I can go to another company that is trying to lure me away with money and good people with whom I am familiar.
Although I feel like I shouldn't even be considering the latter I am because I have expressed interest in a few positions with my current company where I am strong performer and all around nice guy (I think) and I have not even gotten a call back declining my interest. To me that is the ultimate disrespect, I don't deserve the consideration of a call saying "we just don't think your ready yet" I feel I do. The fact is however in the pharma industry the jobs go to the person who has worked the system enough to get a few more prescriptions then the next guy and not on qualifications. A friend once asked me "how many great NFL players have turned out to be great coaches?" the answer is not many. So then why does the rep from the big city with the huge volume territory and no formulary restrictions make a better manager than the hardworking middle of the pack rep from the low volume rural area? Don't misunderstand me I am certain there are exceptions to to the rule in either direction, but we have all experienced what I am talking about. This is the reason why you see the 23 year old DM telling the 20 year veteran how to do their job, and the fish out of water DM who had great numbers despite themselves and now they have to try to tell someone else how to succeed.
I just feel that this industry has become a game that can be massaged in your favor if you work it correctly and the companies know this and turned a blind eye to it. They only care about numbers however you have to lie cheat and steal to get them and true hard work and loyalty is dismissed for the quick buck and the wink wink. There is no loyalty to the hardworking rep who creates a long term business based on ethics, all these companies want is somebody who will buy off doctors and play games with vouchers and whatever else to make the numbers line up for investors.
Why should I be loyal to that?