Not necessarily: Boeing claimed the Super Hornet can take off from a ski-jump carrier several years ago, eyeing Indian requirements. Dassault claims the Rafale can do the same too. The Eurofighter folks have a couple of good CGIs of a naval Typhoon using a ski jump, but that’s about it.
http://rafalenews.blogspot.in/2012/06/rafale-stobar-compatible.html
Interesting I had not seen those reports. Could be rather severe operational restrictions though. Probably a very limited bomb/munitions load to save weight for the take off.
Interesting point, I heard that British Industry has a bigger production share in Gripen than Typhonn