Actually there have always been high-end builders in the hobby. Some guys want to be involved, but may lack the skills... the time... or the knowledge to build their own. If they have the financial means to be involved, more power to them. I personally was never intimidated by guys who could spend more. I just enjoyed participating in my own way... and was glad to share our mutual passion for these cars.
It's also true that the backbone of the hobby has always been the do-it-yourselfers. I don't see the "jewelry" as anything that prevents the mainstream from doing exactly what they want. The upscale market is just another part of it all... and adds more people and interest to the activities.