MSN messenger did have a mobile version. It was in the early days before Facebook messenger existed but it didn't work well because there was no way to do push

MSN messenger did have a mobile version. It was in the early days before Facebook messenger existed but it didn't work well because there was no way to do push notifications at the time. They killed it, but in my opinion they should have stayed course and pushed it through. None of the big chat networks (AIM, MSN) invested in converting to mobile for some reason. Either they were incapable or they bet on something else.