Last I checked, construction costs were pretty similar between here and Calgary, but they get higher per unit than we do. That makes it tough. Wood will forever be at a significant discount to concrete, not to mention the added costs of parking, etc for a high rise. However, land costs are also lower here than in Calgary, so that plays a factor as well; higher land costs generally lead to more upward development. The combination of factors is stacked against us to a certain extent.
There are still high rise developments planned here: Switch P2, Falcon 2, Parks 2, and HAT Old Strathcona x2 (higher land costs). I think there is a bit of bias towards high-rises being tough here from the likes of Westrich, Autograph, and Regency, but part of that is spin and pressuring the city to provide incentives. We also don't know how all these individual companies market their developments to investors - time until ROI, for example. Like anything, it really depends on who you listen to, but remember that each company spokesperson is going to say something based on how their company is approaching the market - that doesn't necessarily mean they are speaking for the whole market.