And lost users every time. Also, you've merged a lot of unrelated products. MSN was folded into Skype after they bought Skype, a separate company. Lync, a corp

And lost users every time. Also, you've merged a lot of unrelated products. MSN was folded into Skype after they bought Skype, a separate company. Lync, a corporate offering with no commonality with MSN, got rebranded Skype for Business, despite no actual relation or compatibility with Skype. Teams has nothing in common with either of the previously described product lines, though Microsoft is going to sunset SfB and push everyone over to Teams, given the success of that product. Renaming Lync as Skype for Business is actually the only "rebrand" Microsoft did here, and it did nothing to actually increase adoption of that platform, considering Microsoft chose to dump it less than five years later.