How many people are actually interested in "social VR"? There's about 7 million VR headset owners, so presumably, at least a large fraction of them. So if I were Linden Lab, I'd be a bit worried looking at this view count:
That's the official teaser to Sansar released about 20 days ago, which was featured on several top tech media outlets including VentureBeat, Tom's Hardware, PC Gamer, and Upload VR, with a combined readership in the many millions. (VentureBeat alone gets 9 million monthly pageviews.) For whatever reason, however, most readers weren't teased enough to watch the actual teaser. By way of comparison, this video featuring VR Chat was uploaded to YouTube on March 10 with little or no media coverage, and got nearly 50K views:
However, 50K isn't all that much either. And also, Linden Lab is not actually trailing that far behind the big guns. Take this Facebook social VR video:
... less than 125,000 views.
It's still early days, so it's not quite fair to make any assumptions beyond this: For whatever reason, social VR as a category doesn't seem to be connecting yet -- even with tech-savvy early adopters.