Easy I know what you say is true for cars, so I imagine it might also be true for bikes. Dealers will sell you the blanks, but most don't have the cutting equipment to make the keys themselves, they will forward you on to an authorized locksmith. We will see I guess
When you have an old lock and key, (mine is a '99), it is better to try to mirror the old key than to cut one to factory specs. Both the lock and the key will wear over time - the lock may no longer be in factory specs. With old key cutting machines this was easy - you could mirror anything. The new black boxes are safer and you can train a monkey how to use one in a few seconds with a banana or two for motivation, but the artisan is now cut (pardon the pun) out of the equation. It is standard or nothing anymore; fudge factors and eyeball adjustments have disappeared - too bad that was what often make the old stuff work.
Thanks for the suggestion and the chance to grumble!
-Bob