Just because curious people ask about "where did you get this" supply, stone, jump-ring, pillars, paper, paint, etc....doesn't necessarily mean they can incorporate it the way you do.
Agree about technique's, those are part of your creative process and one that you've perfected.
People are going to ask, convo and pry into artisan's and crafter's abilities. Some don't understand that its a wee bit rude. But for those of us who can share, encourage and promote within our limits all the better.
To "copy" ones craft would mean that your skills haven't been perfected....and you leave the door wide open for others to copy.......plus, I've had customer's purchase one of my handmade pouches, then walk into the aisle and pull it apart to understand how I made it. Once an item has been sold, it becomes the property of the purchaser.
There will always be those who take the easy way out.
I'm more interested in sharing skills that help others find their inner craft-person.