As reported, a class action lawsuit has been filed against Sony in the US for removing the so-called Other OS feature from Playstation 3. The PS3 was originally advertised as being able to run Linux, and I know a number of people who have bought it for exactly that reason. Removing that feature after the purchase is thus significantly reducing the value of the product to many of its users.
I can only hope that this lawsuit will be successful. After I have bought a product, I own it and I decide what to do with it, not the original manufacturer. There have been somewhat related cases where Amazon removed already purchased books from the eBook readers of their customers. This is simply insane. With the ever growing power that corporations try to achieve over what their customers do or don't do, the outcome of this case might have significant importance for consumer rights in the decades to come.