Good luck on that, Databricks
That's pretty good advice to Databricks, Doug. More power to them if they can promote an open source based product into profitability at an early stage. But most successful open source companies -- Red Hat, Cloudera, Docker -- let open source code downloads and word of mouth to spread the word that will help get their product established. Once they're established as the technical expertise in the field, they can charge for training, technical support, testing and certification of compatibility. It's a slow way to get rich, but Red Hat now has a very broad customer regularly renewing subscriptions without being dunned. Some expenses, like marketing and sales, go away when the model works.