First, I would not like them to raise cruise prices! We tried the specialty restaurant once. We found that it was too much food! In the MDR, we feel that it is included so we can eat as much or as little as we like. Since we pay extra for the specialty venue, we feel we have to eat it all! Actually, on our last cruise, there was one day that they offered free specialty if you booked a future cruise. We did book a future cruise, but didn't even bother to book on that day.
Now, Massages are another story. Ever since we began cruising (about 15 years ago), I always treat myself to a few massages. I don't get cheated on the time!