[maxbond]

It's more that, if you take a meaningful amount of money from N people, the likelihood of financial hardship putting someone in mortal danger (eg, by causing them to lose access to housing or medication, or causing them to be suicidally despondent because they've lost their ability to retire) approaches 1 as N increases. When N is high enough that there are multiple people in mortal danger - it becomes pretty likely that some of them succumb.

This is even discussed in the film version of The Big Short.