@fjtorres5591 and
@fatpunkslim, great and thoughtful comments. Thanks. To
@fatpunkslim, If I said MS places "zero value" on keeping its existing customers happy, then I admit that's a bit hyperbolic, but it's not far off. They certainly place very little value on maintaining customers and building brand loyalty. Note that I'm not referring to Xbox customers exclusively, but across all their product lines. It's clearly something that's either in their corporate culture or coming down from the top. I tend to think the latter, and it's something from Nadella, because they didn't used to be like that under Gates or Balmer.
Marketing, in rough order of importance to productline and company success (I say rough, because these can change order in some cases, or if a company does a really good job with one, it can eclipse the others):
1. Market segmentation (the "People" P in marketing) -- know who your customers are and understand their purchase drivers, and their ethos (what do they care about beyond the product?), because these will influence and drive all the rest.
2. Product development and incorporating features that customers will want within the technical capabilities and budget of the company (not necessarily what they ask for). A subset of this is product lifecycle management and support.
3. Pricing to position the product relative to competing products, accept a winning profit margin (which could involve, say, losing money on hardware, but making it back on software sales, or not)
4. Advertising and promotion. This is what many people think of when they think of marketing, but it's much less impactful than the above items. Ideally, these ads should work based on #1 -- some customers are very feature oriented in their purchase decisions, others almost entirely touchy-feely (think Apple's ads with people dancing). Many products have customers that span that whole spectrum, so they need ads that do both or different ads for different segments.
5. Distribution -- how do you get the product to people and where do you sell it (the "Place" P in marketing). This often connects with Pricing in terms of subscription plans vs. direct sales vs. only selling through certain certified retailers. In some cases, this can be much more important than its lowest place on this list indicates, but usually it's not the key determinant in success.
All of those taken together, plus projected company (or at least productline) ethos define the brand. Companies care about and value their brand because a good brand has a high repurchase rate. If you're happy with your Ford or Subaru or whatever you drive, it's much more likely that your next car will also be one. Most car ads on TV (at least in the U.S.) target existing owners to increase their sense of satisfaction with their current purchase so they will buy again.
Microsoft, whom I support and want to succeed, seems largely oblivious to this. They are a kinder, gentler company Nadella, which I think is a good thing. They are also very smart about their Cloud services product development, distribution, and pricing, far better than they had ever been pre-Nadella (and far better than I would have done with it, huge respect to Nadella for that). But where they used to be good at showing love to their customers and iterating on failed products until they succeeded, which established a brand theme of "we care about constantly improving, and even if it's not great now, you can trust to buy from us because we'll keep working on it to get it right for you." Now they live Nadella's "Press reset" mentality of "if it's not an instant success, we're going to assume that means the market doesn't want it and give up" which also sends the message "Don't trust us with any product, because we're likely to abandon it shortly."
It's too early to be sure, but it looks like that's what they're doing with the investments they made in purchasing all those game studios: Well, it didn't instantly translate to Xbox market dominance over PS, so press reset and go in a different direction. That directive to Spencer would be consistent with how Nadella has treated other consumer-facing productlines and sub-brands (Windows Phone, Band, Groove, music store, etc.).
While that approach may be OK for companies with mostly static customers and productlines (e.g., Hertz Rental Car), that's objectively bad business for any company involved in innovating new products, because it makes it very difficult for any product launch to be successful. And MS is in that innovative space.