Yeah, no! GSAP is not open-source → they can pull the rag on you anytime. No need for drama when we can find/generate alternatives.
It's very typical for someone to look at something that is only 95% perfect and declare that they could replace it in a few days or weeks, while simply refusing to learn from history (or Joel Spolsky's warnings against the big rewrite).
Your quote has no bearing in this context. We aren't talking about rewriting our projects, we're talking about purposely choosing open and free tools.
Also GSAP isn't even the leading animation library in JS ecosystem, thankfully.
I'm not trying to be argumentative so much as point out that different people/companies have different goals, motivations and values. There are many stops between avoidance and zealotry.
For the people/companies who were happy to pay for Greensock and happier to use it for free-as-in-beer, clearly there is something there which speaks to them regardless of how it is licensed. It's important to remember that freedom means people can absolutely choose a paid product, and that's no moral or ethical lapse but often an educated decision.
I don’t want software to get corrupted by financialization. This is why so many people are passionate about open source, it also leads us to the next phase of this battle where software patents are made obsolete because it’s all mathematics and you shouldn’t be able to patent mathematical systems.