Well, no, you're not entitled to compensation, as no game you've bought on PSN has ever listed "PS4" as a platform it would work with. You're not going to get a refund. However, you're fully entitled to feel disappointment and anger, which is what I would probably feel, and to take your business elsewhere as a result.
Where have you heard it suggested that you won't be able to play PSN games on PS4, though?








