Throughout my life I have assembled and optimized a system, and then stopped and enjoyed if for 5 to 10 years. Keeping up on the technology, but just enjoying my system. Also, recovering financially.
Then the urge would come to me and I would upgrade my system... one piece at a time... choosing carefully and investing 2x or more, so at the end I had a much better system.
I now own the best system I have ever heard and am happier than with any previous system. It is as close to perfect as I have heard.
So, lets say in anther five years from now I decided to upgrade. I would start my research from the ground up. Each brand name would have to reprove itself that at that price level it would be the right choice and synergistic with my grand design.
I noticed my answer about my upgrade cycles does not intersect with your question at any point. So, I guess my answer is no.
On the other hand. There is a constant influx of new materials and subcomponents and philosophies of what perfect sound is and how to achieve it, so continued progress is being made towards reproducing the real thing... or a more sonically spectacular version of the real thing if you are into that. But that doesn't seems to say that a company standing still will get left behind.