Only in one Game of all 75 that are in the books were two people ever allowed to win. It's not that Katniss and Peeta were the first district partners to make it to the top 2, cause I imagine that plenty of career district partners made it there, it's that Katniss and Peeta were the first two willing to kill themselves instead of killing eachother, and, whether you've only seen the movie or read the books, people were punished for allowing two people to win. Seneca Crane was killed because he allowed them both to survive.
So no, the Games were not run this way at all, and I don't think that the Survival Games should run this way. I say no. Bad idea.