Data theft (i.e. taking corporate IP) was normalised until very recently (I'd say the last 2-3 years with the rise of the adoption of DLP and public litigation). A few examples I can think of thing I've heard _just_ in my own career; terabytes of client data taken by a former consultant, sales reps that joined _solely for the purpose_ of taking this quarter's leads and then ghosting the company, execs forcing the use of their buddy's startup/consultant/vendor (and then they later join the startup/consultancy/vendor). The latter being _the most common_. If you're a large company, your sales pipeline is so valuable to startups -- and from a single consultant perspective the ROI of ripping off your sales data is _insane_.
I think back to the questionable things _I've_ done that _don't_ amount to data theft, but _should have_ caused someone to probably kick off an incident/investigation.. But they didn't.
- git cloning every repository in the company (who am I kidding, I do this in _every_ company
- airdropping stuff to my personal phone (my profile photo, but it could have been the aforementioned git repos)
- using sharedrop/similar services (to copy my RSS/news feeds, favourites bars) from my work laptop
- enumerated staff/ops dashboards/tooling to get shit done (think: enumerating the CRM before Lazarus and Lap$u$ made it cool)