From the Guardian...

"Most embarrassingly for Viacom, court documents revealed in in March that at the same time that it was suing Google and YouTube, Viacom was itself uploading its content in secret and trying to make it look stolen - so that people would be more interested in it.

One excerpt from the documents filed by YouTube was particularly notable for the embarrassment caused: "Viacom's efforts to disguise its promotional use of YouTube worked so well that even its own employees could not keep track of everything it was posting or leaving up on the site. As a result, on countless occasions Viacom demanded the removal of clips that it had uploaded to YouTube, only to return later to sheepishly ask for their reinstatement. In fact, some of the very clips that Viacom is suing us over were actually uploaded by Viacom itself."

http://www.guardian.co.uk/technology/2010/jun/23/youtube-wins-viacom-lawsuit

So Viacom were being pretty dodgy about IP in the first place, then complaining!

The SAP license includes most (but not all) source code, and you can change it - but the change is logged,and if it is a change to a SAP supplied program, this can affect support arrangements. Basically, it lets you change what you wish, but you are responsible for your own changes (don't screw things up and then expect the supplier to fix a problem you caused!). I thing Oracle do the same with their ERP products. You might have a look at some of these licences, as they might give you some ideas of what to, and what not to consider, Jim

And in Soviet Russia, if the government banned a book, movie or game, and you managed to get pirate copies for yourself, we would all cheer you on.

The government wouldn't let you buy it, so if you managed to get a copy, who cared if you hadn't paid for it - often even the author and publisher would be cheering you on, for valuing their creation!

But if the author and publisher won't sell it to you, everyone thinks you are a criminal if you manage to get a copy?

Sounds like Valve can actually think, which is more than many rights owners and enforcers.