[nibbleshifter]

> But if your social network is just your colleagues, then this sort of thing becomes liability since in all likelihood you'll lose all of them, possibly quite abruptly, possibly even when you actually need support.

Yep. Moved for a job, only real social circle that "stuck" there was coworkers. When people started leaving and the company started to fall apart, my "social circle" fell to bits.

A lot of friends have similar stories, and a lot of companies in tech try foster this environment where everyone in the office is a whole ecosystem of mates. Which makes you not really bother put the work in to make friends outside of work.