Your product should sell itself, but that does not mean you don't need salespeople.
The IT model of the enterprise has become a lot more user lead.
Read these 3 books - Crossing the Chasm, Innovators Dilemma and Behind the Cloud.
Companies have never won. You're always either fighting for survival, or fighting for relevance.
There's a lot of pride that business owners have. It's actually really critical that pride and ownership extends to everyone in the organization. I think of everyone is in the same boat in driving the company forward.
I think bad politics are incredibly dangerous, so it's important to make sure that people are communicating well. Culture and morale are super important. It's best to not force it, but let it happen organically and genuinely.