Oh, you mean they can't stand it that Outlook uses an open protocol (email) or that yet another vendor is adding yet another chat client with yet another proprietary protocol so that every time you add a new person or business you communicate with you have to install a client...<p>If Slack had any sense they wouldn't go near any courtroom anywhere.<p>Microsoft has done more damage to both "Skype" and it's "Teams" product by renaming a beloved product (Lync, not be to be confused with Linq or Lynq or several other homonymous products to "Skype for Business" and then "Microsoft Teams". (e.g. kill two products for the effort of one)<p>Really shareholders ought to be able to force covenants on companies such as "no renaming products" and "no mergers" and if they could you might see it add significant growth and remove risk from the companies that have them.