You claim they're losing money by not giving you BC, but that's not really true. It would only be true if no one else bought the console you would have bought. They will easily be able to sell every console they make for the first year or so, thus no money was lost by you not buying a console.
For no BC, it's a disrupt to your customers base so it's always a thing you trial to avoid when you managed a line of products. And more than the money is on the services (Games, TV, DLC). Have BC easily a smooth adoption. And you can sell BC. Is a real plus in the two first years of console life, after is ROI decline quickly.
Other effect and probably the more negative, you give a very bad message for the future of Digitals sales… a effect not easy to estimated but real…
On the 20 gamers (PS3, 360) I'm really know, from 2-3 games years buyers (your Joe six pack aka Madame Michu in french term), to 20+ games/year, many are not happy with the fact that their digitals buying are not port for the next gen… So they not in good state for buying digital goods on the current and next gen. More than half have stop to buy digital on current gen after the no BC for One and PS4…
I'm known it's on a small sampling and not a marketing panel (and not the no brain customer that marketing like to sample) , but it's not a good step. The digital sales will grow on the next gen, right. But not in the range that they will do… On my little sample many are more easily to buy digital on their smartphones or tablets, than on console, due to this fact… Always give a trust face to customer…
And many are more easily switching for their next system… And you probably known the transition… One is not in a good position… (and PC and Steam got more attract…no so many but more than six months old).
But on my pov is normal, due to the poor marketing plan give by MS (a student give a better plan, they have good points, good ideas so normally is easy)… But it's often the case with short high margin vision, you 're lost the long run vision, and in fine you lost a lot of money, I saw this all days… And generally you also forget the target pov, damned in the past it's the first thing you learn, understood the target. It's like hunting you need to known the target.
P.S: And for the record, I don't give a oriented questionnary to my little sample, just let them speaking like I'm doing with customers. It's more work, but you have a better picture.