Earlier quoted context omitted.
Closed-source software for aerospace and industrial.
That's a very specific market, and I suppose your 25 years of experience in the field helps you market it. I don't think I can sell anything (other than my skills), which I don't want to do anymore.
That's my problem, I don't want to sell my time, I want to sell a product/service, but do not sell my time as a consultant.