LOL. It is just fashion. Few companies survive on the merit of their designs. Most are forced to come up with something new every 3 years.
The measure of truly high performance equipment is that it DOES NOT change much over decades and people still buy it! (yup - sounds crazy but it is true - musicians still buy Gibson Les Paul largely unchanged for 50 years!)
PMC, ATC and Harbeth stick to their high performance designs for decades.
Meanwhile B&W and most others have more designs than Imelda Marcus has shoes...that is because they sell fashionable items and always need new models to drive sales.
The measure of truly high performance equipment is that it DOES NOT change much over decades and people still buy it! (yup - sounds crazy but it is true - musicians still buy Gibson Les Paul largely unchanged for 50 years!)
PMC, ATC and Harbeth stick to their high performance designs for decades.
Meanwhile B&W and most others have more designs than Imelda Marcus has shoes...that is because they sell fashionable items and always need new models to drive sales.