That's completely wrong. Footballers always say that they dream of playing for their country in the World Cup, or of lifting the FA Cup or European Cup. The World Cup is where the best players compete, this is not the case in the Olympics. In Tennis Grand Slams the men play best of five sets in every match not just in the final. Also please note that in a Grand Slam Andy Murray wouldn't go near a doubles match because his main focus is to win one of those four singles tournaments and that Tim Henman is not well remembered for being an Olympic doubles silver medalist. Olympic tennis is just a bonus that pops up every four years. I'm sure if Andy doesn't manage to win a Grand Slam then yesterday's win will be the biggest triumph of his career, but I am 100% certain that his goal is to win a Grand Slam.
Alright I take back my statement, I have to accept that my World Cup example was nonsense. (you can't see me accepting my nonsensical stuff very often
)
But still, I disagree with your table tennis statements. Table tennis is also popular in Europe, Germany has a great team for example. Scandinavian countries also compete at a very high level. Of course the Chinese are dominant, but to me it's no different than running. Also, table tennis absolutely is a sport, and a pretty tiring one at that. The one you play with your friends is a game, but the professional one is a sport.
I agree with what LC said. Olympics should be in the same level as any other respective competitions of any sport. In many sports, Olympics is by far the most important event. Like athletics, swimming, wrestling, gymnastics, taekwondo, judo, canoe and many others. But the thing is, probably the only "mainstream" sport (that has lots of money stuff going on) for which the Olympics are the biggest event is basketball. Football seems to have failed so far, so did tennis. But taking off football is not the right way to go, to rise its competition level is.
If the sports that is consisted of some countries constantly dominated were removed from the games, probably they wouldn't be as popular as they're today. Football is a perfect example, actually. The game started in Britain, but in the Olympics, Uruguay dominated them and Olympic football led to the formation of World Cup, where Uruguay once again dominated. It forced European countries to build up their systems.
Same goes for basketball. US were the only dominate team and European basketball sucked. But after SSCB's controversial triumph against US in Olympics, the interest in basketball in Europe has rose drastically. And look where it is today. Still US is the dominant one, but the interest in it is a lot different.