even a Nicolai, that is really build to order, cannot fulfill every demand. Perfectly normal that there is a non OEM market for customizingAnd here we get into the reasons why R&M bikes are not completely customizable
For an OEM this is logistic hell and no profit center. Have a look a the prices of German premium car brands, they do have some "Individual" line. Extremely expensive and even then you cannot have all you want.