No one could write a commercial program with Little Smalltalk. Love the book, but the implementation is not going to work. Heck, Squeak could not do a program that looked anything like a real Windows or Mac program.
Maybe we're talking past each other but the IDE says the community edition is only authorized for GPL software, every other edition is big bucks. https://www.adacore.com/gnatpro/comparison
> Maybe we're talking past each other but the IDE says the community edition is only authorized for GPL software, every other edition is big bucks.
Do not let this mislead you. The software is available under GPL. That is all you need to know. And GPL allows you to use the software for any purpose. Maybe I should mention that I studied law for two years and then had one more year of lectures in patent and license contract law (see my profile for more information).
But there is Fear Uncertainty & Doubt.
Have you read my answer? There is no reason why you couldn't use FSF GNAT or GPS in closed-source projects.
> Heck, you couldn't even use Ada for non-GPL open source programs.
Why not? The GPL GNAT with RLE allows you to use any licence with your application, whether closed or open-source.
> Because Smalltalk vendors have a long history of doing the same pricing that made it impractical to impossible for the little guy to use the language.
There were always free ST versions as far as I can remember. The "little guy" could e.g. use "Little Smalltalk" by Budd which appeared before 1987.