I started working straight out of high school. Over the years I got a BE, ME and a PhD and paid my tuition fees from my earnings. For my PhD I published sever

I started working straight out of high school. Over the years I got a BE, ME and a PhD and paid my tuition fees from my earnings. For my PhD I published several papers in ACM and IEEE journals, all the programs I had written as open-source and a thesis. Along the way I accumulated a great deal of expertise and experience. These days I get hired as a consultant and write reports on my findings, recommendations and often specifications for new systems (both hardware and software). When you have knowledge and experience that people will pay for, then there is no incentive in giving it or my clients' expertise and knowledge for free.