For me, I notice that I still have big company thinking and I think it has served me well. While I watch others in my field struggle to grab every scrap of work I position myself as a higher-end solution that isn't right for every company. Because of this my clients are larger companies. That said, I have a colleague that does what I do but has made it a commodity and is doing fine - but - has a hard time closing larger companies. And yes, working at a large company gave me a lot of reasons to become an entrepreneur and many examples of how to or not to foster a successful company culture.