I think both Docker and Gitlab have gone this way. Docker for Windows requires a commercial license for a company over a certain threshold in revenue/employees.

I think both Docker and Gitlab have gone this way. Docker for Windows requires a commercial license for a company over a certain threshold in revenue/employees. Gitlab has a free community edition and an enterprise edition with the bells and whistles you'd probably want in that context. IMO, this is the future of open source in general: different licensing terms depending on the user/application. However, both Docker and Gitlab have professional teams behind them. It might not be the case that a particular important FOSS gizmo's creator is interested in writing up/enforcing better licensing terms or providing the maintenance a commercial client would expect.