I've worked for five companies, on the same products (well, variations there-of over time), for 25 years, due to take-overs (I nearly left ~10 years ago due to management numskullery, but a timely buy-out of the bit I worked for fixed my problems while the rest of the company died off).

Hanging around for a while (a long while) doesn't necessarily mean dedication worth investing in, it could just be that I have a shocking lack of ambition :)