How many same-office-colleague-years do you think you’ve had in your career? How many fatal heart attacks in the five across all those? For me, it’s “tens of thousands” and “zero”.
It's clear to me you've made up your mind and you feel that spending the money is a waste for something that's so low risk so I don't see any point in continuing this conversation. If you do still work in an office I hope it never happens to you.
I do work occasionally in an office and have personally walked the floor to make sure the AEDs are correctly located on our floor plans and electronic signage and filed facility tickets to get the maps updated. (They were originally not correct.)
I believe in the benefit of AEDs. I also believe the average number of lives saved per AED installed in an office is way, way less than 1.0, and almost surely lower than 0.001 which was the point of this sub-thread.