IBM

IBM has long ago lost the concept of commitment being bi-directional. It expects more commitment from workers than it gives in return. That said, I think it is better than most companies. IBM does not shy away from dumping valuable employees, but it probably does not pick that course as fast as many companies.

I can only speak for one small part of the software side, but I think IBM does try to encourage people to try new things and give them some time to come up to speed.

A very secretive place regarding job actions. People simply vanish, and when someone does vanish, the people who work nearby seldom ask questions.

Remember that it is talented people in research and development that create value. IBM can only fade away if you try to sell the reputation year after year while cutting back on the kinds of investment that built that reputation.