And generally not more than one. Chances for being acquired aren't that good either. And you probably shouldn't focus too much on an early exit strategy...
I recently read a similar (exact same?) quote in the book "The Name of The Wind" by Patrick Rothfuss. Almost certainly not the genesis of this quote but it's the only instance I know of.
Two wives: you are tired
Three wives: they hate each other
Four wives: they hate you!
(This is a half-remembered quote but I don't recall where I heard it and my googlefu has failed me)