This is tightly related to financial reasoning (calculations and all that) to produce and sustain the device.

You can't just blast it based on opensource idealism without understanding the numbers and making irrelevant comparisons with SERVICE companies that makes use of opensource software as part of their offering.

Maybe to make it simpler for everyone, try to get a sample company that produces a commercial device, but not directly compatible with other platforms before it that makes use of 100% opensource codes and thriving.