This is untrue. It might appear obvious that it does, because in the first instance, everyone can take and use it however they want. But as soon as anyone relicenses the work, everyone else loses out.
There are also more complicated benefits to the programmer-users of GPL software that get lost in the process.
I don't think the situation is clear-cut, and too many factors are hard to quantify, but I don't think you can safely say that non-copyleft "enriches everyone."
This is untrue. It might appear obvious that it does, because in the first instance, everyone can take and use it however they want. But as soon as anyone relicenses the work, everyone else loses out.
There are also more complicated benefits to the programmer-users of GPL software that get lost in the process.
I don't think the situation is clear-cut, and too many factors are hard to quantify, but I don't think you can safely say that non-copyleft "enriches everyone."