After purchasing a one month subscription to Wolfram Language Desktop twice before, yesterday I paid for a one year subscription and decided to really explore t

After purchasing a one month subscription to Wolfram Language Desktop twice before, yesterday I paid for a one year subscription and decided to really explore the language, pre-trained models, and libraries. The article didn’t come across well. They don’t need to justify being closed source. What concerns me is that much of my hacking fun projects and also a lot of my work over the last 40 years has been in Common Lisp. I can take very old code that I have written and run it with several good open source systems and two fine closed source systems. I am sure the Wolfram company is not going anywhere, even if the founder is 60 (that is ten years younger than I am). But, if I were younger, could I be sure if being able to run my Wolfram Language code in 40 years? I don’t know. The support for Wolfram Language is very good. I also pay much more that Wolfram for LispWorks Common Lisp (about $3500 to purchase and about another $600/year maintenance for support and upgrades). There is some pleasure in using well supported tools, and there is pleasure in using open source software. We get to decide individually what we want to use.