Red Hat is by far the most successful open source company and will be the first to reach $2bn in annual revenues (it's on $1.9bn ttm). It's also very profitable

Red Hat is by far the most successful open source company and will be the first to reach $2bn in annual revenues (it's on $1.9bn ttm). It's also very profitable -- it made $180m in its last financial year -- though presumably some of that comes from JBoss. It seems to be by far the most popular version used by governments and large corporations. "We're an enterprise software company. You're either consumer or enterprise. We're enterprise."