No, rms doesn't really care about source code. He cares about user freedom. He wants every user of software to have the same freedom to experiment, modify and redistribute that its original developers had. Placing source code in escrow would not accomplish any of these goals.
I doubt that. Look at all the proprietary software that's abandoned right now. Are you telling me that if all that old source code was suddenly released it'd be every bit as good as software which has been free for the same number of years? Of course not.
