Silicon Valley hype monsters have done this, sure. And so have too many open source software advocates. But all the free software advocates I've read and listened to over the years have criticized MIT- and BSD-style permissive licenses for permitting exactly the freeloading you describe.
Because they can, they don't just think they do. Everything about the framework they operate in allows or even encourages them to do it.
> That's just not right.
As a matter of morality, you're right. This is something very few people or corporations concern themselves with just as soon as there's real money to be made by not concerning themselves with this.
because they can be. They do not think they can be leeches, they know they can be leeches.
> That's just not right
I somewhat agree with you, but they do actually have permission to do it.
We must travel in different circles. I've been around a while, and I've never seen _any individual_ bullied for keeping their code closed source.
That said, I have an extreme bias toward only using open source code, for practical reasons, and I'm open about that.
If you have eyes closed how would you notice?
You can't write "Amazon may not use this" and still be free as in freedom, but terms that force sharing seem to work.
If your license reads "hey, you can use this however you want, no matter who you are, and don't have to give me money", people will use it however they want, no matter who they are, and won't give you money.
Unfortunately, for decades, free software fanatics have bullied inexperienced and eager programmers, who don't know any better into believing that an actual sustainable development model that respects their work is evil and that we should all work for free and beg for donations.