Salesforce is making its biggest purchase ever with a $27.7 billion acquisition of Slack. Not a bad return for early Slack investors who invested in a gaming company. When the game wasn’t working out, Stewart Butterfield refocused the company on a product they created for the team to chat with one another. (Slack needs to be allowed to be the Zappos of Salesforce. Let the team remain separate. Let them focus on user experience and making the most elegant product. Slowly connect the app to Salesforce products. And allow the parent company to learn from the acquired one on UI.)