You should be focused on building a market for your product. What gives you a competitive advantage? I argue that self-hosting Mattermost doesn't help accomplis

You should be focused on building a market for your product. What gives you a competitive advantage? I argue that self-hosting Mattermost doesn't help accomplish that vs. paying Slack. You are right that there is a time and place to start taking more ownership of those basic pieces. Doing it before you even have something to sell is not the right time. You have to survive as a small company before you can be a mid-size company.