Whilst I get the point, in the examples I've seen, it's been more about the parents and what they want, than what they want for their kids.
sadly I think this is often the case, people didn't achieve everything they wanted and transfer that to the kids.
Anyone that believes it's about the taking part, has never won anything.
I'm sorry but I think that's __________, insert expletive at will.
If that were true why would you compete at something you couldn't win yet lots of people do it all the time.
If you win it does also rather depend at what level, as well as effort, training, determination etc, having competed against world championship medal winners, GB squad members and various other people who were quite good as well as at bad club level at various sports (albeit all a long time ago) I know what it's like to come in various places in the field.
My daughter, age 5, is not very athletic although she is improving based on results at sports day (this morning). The other week she did a 1km fun run at school (as her friends were doing it), and while was not setting the world alight (far from it in fact) I was very proud at her determination to do it and finish it, with determination more is possible and that I think is the important lesson for life not the fact that the ego gets a boost from coming first (unless the competition is at a very serious level.....).
Enough said, that's got that off my chest.