Ask HN: List of people who successfully built for profit programming languages?

What people do you know have started for profit programming languages and have been successful at it.

Here is a few I can think of.

- Arthur Whitney (K, Kdb+ & Shakiti)

- Micro APL (I don't know the owner)

- Dyalogue APL(I don't know the owner)

- Stephen Wolfram (Mathematica, Wolfram Language)

- MATLAB (I don't know the owner)

I would be happy to learn more about this industry and the people involved.

Please help me list interesting projects and people that concern this topic. Or Nudge me to resources that I may find interesting.