I feel like you're speaking anecdotally, but at least in my experience some of my best friends were people that I met in previous companies. We still get togeth

I feel like you're speaking anecdotally, but at least in my experience some of my best friends were people that I met in previous companies. We still get together for weekly D&D sessions. But I make a concerted effort to maintain my friendships that I've developed even if we no longer work together, and that may be the key difference. So as always one size does not fit all.