Here is a direct quote from qgil:

"We asked the Mer team to list the *3rd party* closed source packages they need, since they don't belong to Nokia and therefore we need to make sure the owners are fine with the deal.

For instance, Flash belongs to Adobe and Skype belongs to Skype Inc. The agreements signed with these companies are framed for official releases going through a quite demanding quality process. If Nokia would let the Mer team (or whoever) grab those binaries for other purposes then those agreements would be in trouble, affecting e.g. the negotiations for Fremantle."