I would generally agree with this and think it holds true in most cases, but tube audio is already kind of rarified air that not just anybody goes off to pursue in the first place. I think people who already gravitate towards this stuff in the first place would be willing to adopt a new socket design and new tube designs if it truly sounded better and was more reliable. Basically I'm looking at it from an enthusiast point of view as opposed to a mainstream customer. Of course what I really want is for things like Nelson Pass's SIT designs to really pick up steam. This is the eat your cake and have it too scenario that seems to be so hard to achieve in this hobby: ultimate performance with the simplicity and reliability of a mainstream product. Tubes stopped being "fun" for me years ago. I stick with them because there is no solid state design I know of that can give me the sound tubes can offer. If one came along I'd gladly walk away from the myriad problems that come along for the ride in the world of tubes.