They don't, probably. Totally different business models. The conspiracy theory is idiotic. VCs aren't in business to make the relatively flat world of rent. They're looking for that 100x return.
In any case, what you're talking about is renting office space -- the linked article is reporting on renting residential space. There's no evidence I can find to suggest that Silicon Valley style VC funding is secretly behind Essex Property Trust, AvalonBay Communities, or other residential REITs.
And they also own residential rental property out here too.
I can't speak to the sv, but this isn't an unsubstantiated meme in Boulder.