I work in open source one of my products is. The benefit of open source is apparent when we talk about core technology and standardization. It’s not very helpful when it comes to specific implementations or customization.

Open Source requires sponsors, sponsors need to build on something to create capital to pay the developers behind the open source. I.e. Blender is open source, because people use it to make 3d models that they sell or get paid to build. So companies that use these models to make products like games and movies, pay Blender so that they can continue making it better and give them support. Also individuals and companies can add stuff to it. But really that’s neglect able. Open source is a promise.