> don't you think DoorDash or Airbnb would be significantly more valuable if it told you what restaurants/Airbnbs your friends like as well?

It wouldn't for me, no. My friends already tell me what restaurants and such they like. There's no need to put an intermediary in that communications.

But I'm just one person.

For sure, I just doubt that the long-term user privacy will be maintained. Localized data (from the perspective of a graph) is even more valuable than overall data. I suppose I'm just burnt out from privacy being a selling point until...it's not any more.