> If they would make their stack FOSS they would be absolute heroes and shape the future [...] ... and instantly stop making money. I have the impression that

> If they would make their stack FOSS they would be absolute heroes and shape the future [...] ... and instantly stop making money. I have the impression that making money is quite important to Wolfram Research. You may be right that in the long run they're bound to get their lunch eaten by free alternatives, but "in the long run we are all dead" and it's really not surprising if they prefer "continue making lots of money from selling Mathematica, and maybe one day find that free alternatives take away our market" over "immediately make vastly less money from selling Mathematica, but keep market share for this big codebase we can no longer make much money out of". Also, open-sourcing their stack would mean relinquishing a certain amount of control. Have you ever heard anything about Stephen Wolfram that would suggest he'd be OK with that?