I've seen people getting fired in BigTech for using the platform to stalk their ex-es. It's usually an alert that goes off when employees access internal dashboards for a certain profile, too many times.
level competency is higher at BigTech but laziness, vanity, selfishness, ego, and learned-helplessness happens plenty too.
e.g. for all of the BigTech brilliance plenty of them fall for mildly complex phishing efforts or bribes, etc.