Thank you so much for these links.
It helps me a lot to get a closer understanding of the facets of babylon.js.
After watching almost all of the videos of the babylon youtube channel I am impressed, that @Deltakosh and @PirateJC and @PatrickRyan and @carolhmj answers here! (I dont know the others yet 
) Thank you. I like the quality of the videos. They actually drew me in to take a closer look and to get started with playground and babylon in general.
At the moment we are seriously considering to start working with babylon.js for our next projects. It is quite a radical decision as we would move from a very specialized engine into a new universe of possibilities.
But also somehow it feels like stepping back in time, back to somehow the roots of realtime 3d. We feel ourselves comfy at home, more like back in the days of dx8 or 9 or even vrml, but with all the fancy stuff which was missing like pbr, gltf aso. and of course in the browser and on ‘all’ devices.
I feel myself excited to dig deeper and get some of our testcases to life.
In terms of working and producing with babylon.js, I am wondering what I do need to know about licensing.
I found a topic here: What is the BJS future about opensource ,license and is that wanna be changed?
cheers.
Werner