I don't actually think it's malice. I think it's just a matter of unforeseen consequences combined with an inability to take corporate responsibility for their

I don't actually think it's malice. I think it's just a matter of unforeseen consequences combined with an inability to take corporate responsibility for their own products. The reg key they've changed in the base game does have some Ubisoft specific information so I expect they did that in order to allow the game to work well with their delivery service. They tested it and it worked. They presumably just didn't think to test the expansion installer or perhaps even worse, weren't permitted the funding to explore all the potential knock on effects. Since noone is fixing it, despite there being many service tickets about it, I can only think that the engineers don't know what the issue is.