I'd say it's an example of the opposite, the partly closed-source Puppet Enterprise is where the primary focus is now, support and training are still available

I'd say it's an example of the opposite, the partly closed-source Puppet Enterprise is where the primary focus is now, support and training are still available but more of a sideshow. Also Puppet Labs got their initial funding almost 10 years ago now, back when investors believed in open source, as the parent comment observes. They've received around $85m to date, half of that since their pivot to Puppet Enterprise.