For whatever it's worth, I'm with David on this one. In order to make money, as a small shop or one person operation, with woodworking you MUST offer something unique and of value and find the market that's willing to pay for it. Since you're hoping to do this after retirement, what the heck, don't be afraid to ask for the high price for your work if it's indeed unique.
For myself and developing my woodworking business as as a sideline business, it's as much about selling the image of yourself as it is the pieces that you make! There are many woodworkers much more skilled than I am but who don't get anywhere near the price for their work that I do. I'm not bragging, just explaining that you have to sell yourself as a unique craftsman to go along with your unique work. And of course, tapping into that market that can afford to layout the bucks for whatever it is that you want to do.
Forget competing with the big boys. Do your own thing, put your heart into it and you'll find a way to do what you want to do.