Not in my experience, and I've worked at a couple large US tech companies. I've had groups of friends who happen to work at the same place who I never interact

Not in my experience, and I've worked at a couple large US tech companies. I've had groups of friends who happen to work at the same place who I never interact with at work, but for actual people I work with, I'd say spending time with them outside of the work is reserved for once-every-couple-months happy hours.