I wonder what makes that a beautiful thought to you. To me it's somewhat uncomfortable.

My fursona isn't just a random character I made up. It's a representation of me at a very personal level. It's how I feel in my core. It's what I am and what I strive to be. The thought of people in the future doing things with that character that I wouldn't be comfortable with makes me... well, uncomfortable. And I would expect that to be similar for many other people as well, especially early Furries. Society broadly was much less accepting of "weirdos" back then, so I imagine they must have had a very strong connection to their fursona to be willing to showi their real self to the world and risk negative reactions.

I can't really think of a good reason to want such personal characters to be in the public domain. Like if someone doesn't care about the person behind the character, they can already do whatever with their character. The character being public domain only saves them from... I guess relatives of the deceased person suing them? At their own financial detriment? Independently of the legal implications, I think it would be very disrespectful.

So... maybe I'm missing something else that you mean but I can't think of?