I'm aware of Devon but isn't that a recent thing? And I'm guessing you're referring to their use of OpenStack and buying RHEL licenses/support? What's interesting is that several people up here have used Devon as the poster child for reserved technology practices. Encana/Cenovus tend to have the recognition of being technology forward. Maybe Devon has changed since they sold off half of their Canadian assets.

I agree my ignorance/attitude towards the industry isn't the best. I've always felt as a software startup the service companies would be your best bet.