All entirely sensible points Cheeseboy.
This is not really an issue that I think that much about really, this thread not withstanding. I have been in and around the industry for many years and am pretty cynical of how it works but occasionally issues, like the Beats 'thing' rather 'gets my goat'.
Sticking with the examples above, the Sennheiser issue shocked me not because of what was done but by who did it, I had always considered them to be a 'serious, reputable' company. That's not to say that they are not, but despite the explanations about drive unit impedence changes which kind of makes sense, this remains dubious practice.
However, unlike the Beats the HD555/595 remain a quality product which sits a little easier with me, similarly the success of the iPod is based on the whole 'download culture' started by Apple and iTunes which has seen Apple earn it's dominance by providing the whole infrastructure that makes it work. As it happens I rarely use iTunes for anything and only ever use an iPod in the gym but I think I understand it's appeal.
The separation of 'proper hifi' and mass market audio is probably a reflection of my teenage years, mass market hi-fi as we know it today barely existed, most people bought record players or maybe radio or stereograms ('a nice bit of furniture'), real component hi-fi, still mostly valve, was sold in a small dusty shop in a sidestreet in a quiet part of town.
No one tried to pretend that a stereogram was hi-fi and in the sticks, where I grew up, hi-fi was relatively unusual. We knew someone who had a 'good' setup but he would only allow classical records to be played and for a teenager just getting to grips with very early Rolling Stones this did not have much attraction.
The intrusion of mass market, marketing led product into the hi-fi industry is just the market at work, I understand that, though what I do find more difficult to come to terms with is the way that the mass market product, so clearly not remotely hi-fi, is accepted by uncritical consumers.
This is why I often find it necessary to make the distinction between the mass market carp that proliferates at the bottom end of the market and the relatively few products that actually attempt to make a decent stab at playing music.
Sorry to go on, but I have an interest in the whole music/music playback industry, so do tend to sound off on such matters.