GitLab CEO here. Awesome to see this article! Ask me anything.
Why is the gitlab.com option so cheap, even for corporations even if they pay for support? I understand you're still trying to gain market share more than be profitable right now but as a company paying nothing for the product certainly makes me feel like it might go away at any moment and even if we pay for support we may not receive the level of support that we need.
As corporate users, maybe we're not gitlab's target audience right now but aside from those questions it seems like a nice alternative to github, especially with regards to the additional ability to have pull requests rebased before merge...