Rich tech people didn't get rich by fighting for just causes, and against the interest of other rich corporations. There's no money or prestige in backing IA.
I wonder, if you averaged the HN comment thread at the time and took that as legal advice (or even better, if they had announced it and then waited with publishing all those books until there were 24h worth of comments and then used that as legal advice whether to go through with it), if they'd be in a better position now