I've bought every Anno, 1602, 1503 and 1701. While the lack of multiplayer in 1503 was a disappointment, the rest of the game was excellent. Now, not only has multiplayer apparently gone missing again, but you are only allowed to activate it 3 times. This is NOT ACCEPTABLE. I will not pay for software that has such a disgusting attitude to me. There isn't even a revoke tool, although even if there was it would still be utterly unacceptable. What happens in 2 years if I want to play it? The activations will be used up due to hardware upgrades. Contact them and get more? Unacceptable hassle. What if they've gone under? They always say they'll release a DRM-free version but do you think a company about to go bust is going to spend time and money updating an old title? No chance, they'll either be rushing their current project or all updating their CVs.
I will not support a publisher who treats me in this way. Many, many others feel the same way and many more will as the impact of such disgusting practises continue to gain notoriety.
Please, vote with your wallet. Don't pay good money to be treated as a criminal.