Sure, but if your company’s productivity depends on these accidental interactions, you’re in serious trouble if you’re as large as Apple is. Apple Park is so large you can roam the halls all day and not run into the people you’re working with on other teams. Many of the teams will be on other campuses anyway.
I would argue the benefits of having more of your state in Slack more than make up for “surprise productive watercooler meeting” thing that managers are so hot on. I think I’ve had that interaction maybe twice in 25+ years, and one of those times was just pointless gossip in the end.