Hi, Ron.  Re: your question: is not a "contributing cause" of [growing density of Vancouver] been "real estate special interest groups..."  What groups, exactly are those, I wondered?  Ah, yes,  in your next line, you give some hints (nudge, nudge, wink, wink): those money launderers; tax-dodgers. And we all know who THEY are, right? 

Vancouver: "Another high-density Asian Hong Kong," you say! Hong Kong boasts over 7 million people.  Wikipedia: Statistics Canada data shows that over 17% of the approximately 2.5 million people living in the [Vancouver] metropolitan area are ethnic Chinese." That's not much more  than the population of Greater Victoria.  Hardly Hong Kong, Ronald.

How do you feel about Germans, Ronny? Wikipedia: "ethnic Germans are the largest non-British group [in Vancouver] and, as census records show, only in the 21st Century were outnumbered by the Chinese for the first time."  Yikes!  How sneaky is that?  They even look like the rest of "us", right?  Who knew?