96% of the programmers just want to program. Don't try to transform them in project manager, designer, UX, etc..

I have wondered that too but hear it often that you have no ambition if you are a Dev for more than a few years.

Companies should encourage people that want to code - to code. Also help dev's that want to become PM's to train and get PMP.

Unfortunately large corps view developers as a commodity. Need to know the technology and the business inside and out - - this will help you move towards architecture and system engineering. Beats project management, etc.