>Really, consumer-grade coffee makers aren't intended to stay on for days at a time
Surely a coffee maker would get a break in the afternoon/evening? I agree that using it at a duty cycle higher than it was designed might be an issue, but unless you have the entire floor share one machine it should be fine.
It really depends on the office. A Mister Coffee won't survive long serving the Mongolian army. Switches wear out, spills happen, stuff breaks, you need parts. For that you need something like a Bunn (https://commercial.bunn.com/38700.0011).
Surely a coffee maker would get a break in the afternoon/evening? I agree that using it at a duty cycle higher than it was designed might be an issue, but unless you have the entire floor share one machine it should be fine.