Honestly, if multiple of my colleagues would quit their jobs in the department where I work at (or simply all became sick or took vacation at the same time (the latter can of course not be allowed)), whole departments of the big company where we work at might stand still at least for weeks. The central reason this all has not yet ended in a huge disaster is a quite capable section head who
- manages to stick the department together (to avoid quite a lot of people quitting as has happened in other sections)
- for some reason is able to play the political game with his superior really well
Field of work: "shadow IT" (DevOps work) at a well-known big company.
I hope this serves as an example of why tethering your understanding of working needs to your extremely limited experience - as it is for all of us - makes your argument a bunch of weak anecdotes that add little to the debate.
Talking of limited experience - you think that the tech industry can disappear overnight and life will just "continue unabated"? Yikes.
"We can always go back to the stone ages", sure, sure we can.
Also, who doesn't bring their own coffee from home vs. drinking the three-day-old moldy diarrhea at the office?