Some were, some were not (I grew up there). Also, while some spies are money-motivated, most spies from Eastern Europe were simply fed-up with the system.

We will never know for sure, but did you watch "Citizen4"? A closer look at Snowden - IMO, it's highly unlikely that he was a spy. It is clear (to me, at least) that he is highly principled, not money-driven. He'd have to be an extremely good actor.

Snowden's principles are exactly what make him such a great Russian agent. They don't have to sell him on the ideology since he already has it. It's like Aikido. All they have to do is take the momentum of his enormous ego and sense of self righteousness, and just sort of redirect it a little bit. Now all of a sudden Snowden finds himself sitting in Moscow being debriefed by Russian intelligence. It's brilliant on the part of the Russians and terrible for NATO.