I started seeing more and more non-free content (paywalled or non freely licensed articles and videos) and less Creative Commons or freely licensed content.
All of this is making me worried about the free content future.
Why aren’t people worried about that and why they are not doing something about it?
I don’t know of any non-profit currently that advocate for free-er world, which is essential for the libre culture.
You don’t know of any such non-profit? Creative Commons, Wikimedia Foundation, OpenStreetMap Foundation, you don’t know of these?
I’m a supporter of free licensing of any and all works, but I recognize that it is most important for software because there you need transparency about how it actually works (and affects our lives), you need to be able to build on other people’s work, this is not necessarily equally important for all other types of work. It’s also a fair point that we have not really yet figured out a very good business model for free licensing, unfortunately.
Of course in general these are all still rising movements, think about how many scientific journals have CC licenses nowadays compared to like 15 years ago.