Obsessed with becoming an advertising company for the masses, they stopped &quot;productizing&quot; their technology. Amazon doesn&#x27;t stop other people from selling stuff with AWS servers, but that&#x27;s basically what Twitter did when it destroyed its own developer ecosystem.<p>The parallel with Slack is very apt. The only real strength of that platform is how easily and freely it integrates with third-party services. If Skype, Facebook or Twitter allowed that freedom and ease, Slack would have never appeared. Instead, they want to maintain an iron grip on who does what (or endorse a model where your corporate sysadmin maintains such grip, like Skype For Business does), and they lose.