With the right people getting involved I am talking about the investors. That has nothing to do with execution but to do with access to distribution and press.
Have you actually used Slack? Where I currently work, we have gone through two other chat products in the past two years: Campfire followed by Flowdock. They all fizzled out and died - people just stopped using them for some reason.
Then we tried Slack, and it's the first time the entire team has adopted 100% and maintained it. Slack mobile has even replaced text messaging/GroupMe for a lot of us as well.
Don't hand-wave away their success by giving credit to investors. It makes you sound bitter and insecure, or at least uninformed. They've done a great job building their product and deserve the position they're in. Whether or not $2.8B is an accurate valuation is beyond me, but it does seem like they're minting money over there.
Campfire and Flowdock are both pretty awful compared to Hipchat (the previous market leader) and Slack. I think Hipchat is feature-wise mostly on par with Slack, but has a much more approachable interface. Hipchat is also learning from slack on how to make integrations easier to install and configure. Slack surged into the space by marketing to companies that were using nothing - not by winning people away from competitors. I'm not sure that Hipchat can take the space back from slack without a major new killer feature, but Slack's marketshare is hardly guaranteed.
I have not only used slack i am running a 600 people channel, use it for work plus several side projects. I am a huge proponent of Slack and I have used them since very early on. I am not disputing the quality of the App.
But it's not just an execution game as many would like to claim.
