In response to the outrage about Driver: San Francisco having DRM mixed in, Ubisoft has claimed their DRM works — and that it is successful. Admittedly, as intrusive and unpopular as their DRM is, it does seem to be reducing piracy somewhat. I would, however, be interested to see how the sales of said games have been doing. It would be quite interesting to see how overall sales have been hit by the new DRM, and whether there is a net gain or loss for the company.
There’s actually a rather large amount that goes into determining whether or not this is a “success”. I’m sure it cost them quite a pretty penny in development and testing, and it has caused them a rather hefty amount of bad PR. With their servers dropping in the past, many gamers are wary of purchasing anything with the Ubisoft sticker.
At the end of the day, however, it comes down to whether or not everyone is putting their money where their mouth is. If everyone continues to purchase games from Ubisoft regardless of the invasive DRM, then I see no reason to call it anything short of a success for the company.