It's much easier to start open source, rather than tack it on after the fact. Depending on your business, it could also be a huge advantage. For us, being open

It's much easier to start open source, rather than tack it on after the fact. Depending on your business, it could also be a huge advantage. For us, being open source means companies like Uber and Airbnb, whom have ample engineering expertise, can still use Sentry. In another world they might have rolled their own. This opens up a big opportunity that you can take a number of business directions: - a hosted offering (effectively what sentry.io is going for) - paid on-premise support (we offer this as well to select customers) - on-premise enterprise offering (open core) I'm not a big fan of the distraction of doing both on-premise and SaaS (thus our stance), and I really would love if we never have to build crippleware (open core).