In order of priority, your responsibilities as an employee are:
1. To yourself and your family
2. To your career and professional development
3. To the company
Don't ever sacrifice 1 or 2 for 3 because the company will not do the same for you. Part of meeting responsibilities 1 and 2 is making sure that you are fairly compensated for your work product and for the value you provide to the company. If you are not being fairly compensated for your work then you should make some effort to rectify this imbalance. If your efforts yield no fruit then you should walk away. Capable employees are too valuable to be squandering their potential drinking kool-aid for the benefit of others.
It would take an exceptional company with a grand vision for me to swap 2 & 3. I could see myself doing that if I worked for Seymour Cray's companies in the 60s and 70s, or Bell Labs in its heyday, or a company with a grand vision like SpaceX today. But for the most part, you are right.
