The staff ate it later

As noted sometimes the staff can't eat it, heck sometimes you might not want to eat it. That has to happen pretty often.

I worked at a company with a particularly sensitive HR team who would host pizza parties now and then, but they'd only order "weird" pizzas and I guess they liked it, but they were quite miffed when people stopped coming / didn't want to eat some pizza with some kind of fake cheese and unrecognizable veggies.

They were really miffed when my boss ordered our team pizza on their pizza day too, suddenly very concerned about waste...

The message was clearly received. Next day and subsequent ones, an equally high quality spread of actual engineer food was tabled. But with no rabbit to eat it up, I think a lot of the first day's spread was wasted.

This was during the pre-2K tech boom years (this dates me!) Really fancy catering at (my) work is a distant memory now.