Or are you referring to cases where at least one founder wants to continue?
YC has common shares (and a small minority at that) while the start fund is arguably even worse off with a convertible note.
so, if the founders decided to, they could just pay out the rest of the money as a bonus. immoral? yes. illegal? i don't think so.
I guess investors of the type investing in start fund tend to think of it more as a gamble that only converts to anything if the company raises and don't care much about recovering relatively small bits and pieces in the even the company fails.
Thought I'd doubt it would be litigated, unless the founders are particularly stupid in addition to being immoral.
> it sometimes caused messy disputes in the unsuccessful ones.
I can't imagine a dispute that would occur at 150k but not at 80, except maybe of the cut-and-run variety, but the same could be said of any dollar amounts - you need to know when to cut your losses.
(and, virtually anyone who can get into YC is passing on a $10-15k/mo income opportunity by just getting a job somewhere. Fighting for 1-2 mo of wages makes less sense than fighting for 6-12. The dispute would happen anyway, but it's not worth fighting if there's only a small balance left.)