Newbie here...
Drew, I got a bad feeling (a feeling I'm sadly used to) when I started reading your initial post, but then I became delighted: it's very nice to see some respect given to typeface copyright*, since those "giants" you mention in fact also include some -deservedly- legendary typeface designers - people who painstakingly craft fonts for others to enjoy/read, largely anonymously. I happen to be a typeface designer myself; it's arduous work, but *so* easily pirated... :-( The value-per-byte is very high, but most people just take fonts for granted. Honestly, the good ones are worth a lot.
* Karma to you!
The thing is, it's very hard for a layman (in fonts) to know which are legit and which are in effect stolen. Like that "Futuro" thing - it's probably a swipe job... Not your fault though.
Just to be clear, I'm no cop - I'm just willing to help people behave morally if they want such help. And remember: if you/we want type designers to help ramp up Kindle's typography, we need to look after those most qualified to do it. Just sayin'.
BTW, please see this thread:
https://www.mobileread.com/forums/showthread.php?t=92046
BTBTW, any high-value font threads here I should read?
hhp