If Grado evolved too fast they'd alienate their target market. It's like when Lamborghini released an SUV in the 1980s, and only the Italian military and some rich oil sheikhs/sultans bought it, despite the hype about its participation in the Paris-Dakar Rally. Take note, at the time it came out, even the HMMV (that's Humvee to everyone who doesn't check histories behind things) wasn't that popular, and the only "luxury" SUV was Land Rover - no Escalade, no Navigator, and by "sport utility" they mean absolutely no to radial tires and then they run up a hill. But come the 2000s, after the Navigator and Escalade became the substitute for the DeVille and the Town Car, while Acura and BMW made taller sport sedans, the Porsche Cayenne nearly edged out the 911 in sales.
Similarly, there's the Porsche Panamera and an upcoming AWD Ferrari styled like the custom, 4dr Wagon 456, but still with 2 doors, like the Aston Martin Rapide. If the M5, produced by a company that was making passenger cars first and sporty a close second, hadn't come out, the more "purist" sports brands wouldn't make anything with 4 doors or even AWD.
But back to headphones, there's one other reason why the design at least isn't changing: parts. If you really look into other brands though, this is more common than you think. Sennheiser, AKG and Beyer use the same basic earpad mount, and some of them look very similar across generations and product lines. If Grado would 'evolve,' I suggest they jsut get more comfortable materials on the earpads, using maybe the same basic shell. Or they should really just go ahead and change the shell design to something like the Headphile C-Pad design, give us padded headband pads, and retain the same headband chassis; it's not like they'll alienate owners of the old headphones because they can still make money making the pads given they're relatively cheap. Head-fiers though have to accept that better pads can't be had for the same $20/pair bowls, and prepare for something like $60 Sennheisers/Beyers or even $100 AKG angled K701 pads.
Edited by ProtegeManiac - 10/11/11 at 7:15am