It's not a proprietary format is it? Just a proprietary method of printing. It's just written text (format). Though I agree it should be simply open license.
Why is this getting downvoted?! This is absolutely detrimental to any future history!
Largely because there's nothing proprietary about the format, and even less about recovering data from it because you just look at it under a microscope.
Don't worry, I'll emotionally recover.
In one thousand years, any format will be proprietary.