Marketing, if could have light weight, large throat size, can do heavy duty, auto cut, easy bobbin, holds a large spool, embroidery, all the plus items, we wouldn't have any reason to have more than one. :) If bits and pieced offered, we then have more than one, 1 home quilting, 1 class, 1 embroidery, etc. from what I've noticed reading old posts, many have many :) Oh, and if ask I plead the 5th. LOL