As Heroku Boss Flees to Olive Farm, Where's the Platform Cloud Going?
wired.com
wired.com
Given his position and the acquisition, I would not be surprised if this move left a lot of money on the table but for many the difference between $25M and $50M [1] isn't $25M, its three years of not sleeping well because of the stress.
[1] Pulled out of my hat, I have no insights into Byron's situation.
I asked a Heroku employee about this, and he attributed it to their awesome culture. It really seems everyone loves it there. Certainly, every Heroku employee I know (sample size: 12ish) has an excitement that doesn't mesh with the tone of this article.
Echoing what other people have said, there has been no exodus. Throughout its history, Heroku has focused on building an awesome place to work, and they have continued to do this, even at Salesforce. I worked out of the Heroku office for a few weeks (pre-acquisition), and it seemed like a great place to work. Everyone was super-friendly, and seemed to be working on things they truly loved doing (plus, they had a beautiful office that was extremely well-run). I would predict that there are no major staff changes in the foreseeable future.