I’ve always read that binary systems seem to be the norm and stars like our Sun the exception. Is it possible stars like our Sun form from binary protostars that form too close together and collide to form a single star? Or do we have plentiful examples of single protostars?
Binary systems are simply more popular because anything beyond two objects of similar mass can’t have a stable orbit for a long-ish time.
To be clear: it’s not impossible, but it’s simply highly improbable.