If the Bugatti is free, why not use it? Unity is very easy to use, and it gets easier over time. They keep making paid features free, and once ECS is mature (in the UI, I know it's production ready), I think it's going to have a huge positive impact.
Same? If helicopters and fuel would be free, I bet everyone would fly one to store. Safety is the only concern here, and it is irrelevant for the topic.
