I could see, as an unintended consequence, prices will fall after the Olympics. I could be wrong, however, I think a lot of investors have bought in the last few years with the mindset that they will SELL after the Olympics. Supply and demand dictates prices, and I think there could be a lot more supply. And by the way, the Olympics were a major cause in Calgary's boom
Whether or not Vancouver will boom more, I don't know. But I think, obviously, it is a more attractive city than most. Salt Lake City? Not too great. Nagano? Nobody really *chooses* to live in Nagano

Vancouver is a much different city than has hosted the games recently, in that it is actually a big city, with nice surroundings, and not some little resort area, such as Torino or Nagano, and Sochi to come. We are, after all, the largest city to *ever* host the Winter Olympics, and really the only one recently who actually has an economy that people could see themselves become a part of.
You don't move to Nagano and expect a job, or expect that you could create your own. Being an English speaking, but very diverse, city also helps.
Would you move to a city that is 99% white and Mormon? How about 99% Japanese with no English, where everybody likes and does pretty much exactly the same things
Probably not, but people of all races, religions, and backgrounds will see Vancouver as a melting pot, that is actually a pretty nice place to be. This is very attractive to Europeans, Japanese, Chinese, pretty much anybody. As they can move here, do their own thing, and not feel so "alone", as chances are you will find somebody else who speaks your language, is from where you're from, likes the same things, etc.
There really is nothing distinctively Canadian about Vancouver... it's more of a trip through several other Countries, and you hear several languages but English while walking downtown.