[ps101]

    > but I feel like I'm missing the point of this

There is no overarching point - each of the resources that you've listed have their own reasons to share educational content for free, it's up to you to use it as well as you can.

[eternal_intern]

Well, you're right. The people sharing the resources are doing it for education's sake - for anyone that's interested. I think it's more accurate to say I feel locked out