Well, I already retorted the Action Man/Trivia issue earlier in this thread.http://www.rockmancorner.com/2011/05/mega-man-legends-not-coming-to-psn.html
Sven in this video (from 14:20) speaks of the various things which can cause issues. VA and soundtracks, which he seemingly spoke against previously, are among them. But there's also logos, middleware, and the fact that early contracts may not have specified digital distribution as acceptable use.
Noteworthy is that Sven starts to talk about Legends 1 specifically, but then stops himself.
My money is on digital distribution. Because none of what he is talking about stood in the way of MM8, X4, etc., in disc-based collections up to 9 years after their original release. The PSP ports not coming here could be a simple marketing decision; can you really blame CoA for not bringing over UMDs containing only a single generally unenhanced PS1 game? Does two games make for much of a compilation? Even Japan never got Misadventures on PSP, to my knowledge anyway.
There's one other thing we need to call bull on CoA for: NONE OF THIS
stands in the way of
, because that one was never previously brought to the U.S. So if they wanted to make a quick digitally distributed buck, there you go.