As for Sony, to me it is inexcusable. I am under no obligation to be a mainstream user. The fact is, I bought a product for its feature set. If it now doesn't have some of those features, I no longer have what I paid for. The judge must be smoking crack IMHO.
Another example that comes to mind is VW diesels. Bringing them into emissions compliance by software update will reduce performance or mileage. The fact is that the cars were defective and if the defect can't be cured without degrading the specs, the buyers are owed compensation for degraded value.