Activation schemes are usually bad news for a company, because they just piss off their user base without having much real benefit in terms of increased sales. I recall the loss of goodwill Curious Labs suffered when they announced Poser 5 would have activation - which they subsequently had to withdraw from.

It may work for a company like Microsoft because they have a monopolistic position and don't need the goodwill of anyone. It would be unwise for e-on to go down that path, but from what agiel says, it doesn't seem they are intending to.