Marmal4de writes, "Probably because they're all bents :/ Save the Baker St."
More likely, the problem has been the availability of suitable raw materials for both Turkish high grade Block and African Block. Currently, the shortage of high grade Turkish Block is acute and Sellers of the current production of Sherlock Holmes Meerschaums are without stock... Some have even pulled their advertisements for this series, out of frustration over the difficulty of getting these Pipes to sell. The Original Collection, the Adventures of Sherlock Holmes and the Return of Sherlock Holmes ranges in Briar continue to sell well to an avid collectors' audience worldwide. I don't think that the preference for straight Pipes is the underlying reason for this trouble with their Meerschaums.