The question is mostly addressed to those ho have crossed to the other side (i.e., left academia): what are the options for career growth outside of the academia?
Note that the question is not about "what kind of job I could do outside of academia with my degree" - I have successfully handled that part (I am a physicist-turned-computational biologist/bioinformatician). Rather it is what are the possibilities for further growth: is acquiring managerial experience the only option? Could one advance by broadening or deepening one's expertise in a particular field (like becoming a solicited expert/consultant)? Are there other options?
Or perhaps, the premises of my question are wrong, and are still influenced by my past in academia, where the career paths are pretty well outlined: PhD student -> postdoc -> junior professor -> senior professor -> perhaps branching into going along the administrative line (department director, provost) or collecting academic honors (up to a Nobel Prize) or getting plenty of research grants (all of which possibly accompanied by switching to ever more prestigious Universities.)