Sad to say, but in conversations with both executives and engineers from Japanese as well as European camera makers, we've been suggesting this for years. Years and years – well, at least 4-5 years.
The response is always, Humm, ya, that makes sense, but then nothing ever happens.
Why are they so pig headed? Hard to say. In reality, many of the executives simply don't have an in-depth enough grasp of the issue, and the engineers that do understand it take their marching orders from the executives who are unfamiliar with the need.
Another industry pundit and I spent an entire afternoon a couple of years ago with a senior product manager of a major camera maker who did get it, and who could have pushed it through on a new camera that is now on the market. But when asked why it didn't appear, the answer was a shrug that they had to prioritize their engineering, and that this didn't make the cut.
So, don't hold your breath.