Microsoft never claimed to have all of the data of every single person's purchasing habits on every single device, nobody would believe they have that data, they aren't speculating on limited data, they're posting facts about their own ecosystem, folk in the Xbox ecosystem spend and play more via Game Pass, they have the only relevant data needed, data from their own ecosystem.

It's not incomplete data, that's just...they're talking about their own ecosystem dude. If Sony talks about their ecosystem do they also need to know all of Xbox's financials to be allowed to do so? No, they don't give a shit, they aren't making money off Xbox players

Why are you talking about entirely different countries? a good comparison would be a country talking about something specific to only it, which benefits its own citizens and causes them to try/spend more over a traditional method.

More to the point, how the heck is Microsoft meant to make data for it unless Game Pass is also on Playstation, Nintendo?

"According to MS, GP subs spend 20% more time playing games, play 30% more games, 40% more genres, and spend around 20% more on gaming overall than users who aren't subbed to the service."

How will they know all these stats, what stats will they be using? There's no Game Pass on these consoles to say folk play more games, more genres, spend more than those who aren't subbed to the service, what service? It doesn't exist there So of course they are talking about their ecosystem and everyone knows that when they mention those numbers, they still tell us something, that Xbox players spend more, play more, try more games via Game Pass.

All those stats say is that those that spend more time playing games, play more games and spend more on games, are more likely to subscribe to gamepass. Which makes perfect sense. As a metric on the effect of game pass, it says nothing. For all we know they could be spending less than before subscribing to gamepass, just on average still more than those that don't subscribe.

1. Even if we were to incorrectly assume that they only meant within their own ecosystem they would still have a deeply flawed dataset. Their ecosystem includes PC. Microsoft does not have a way to track all sales of games on Steam, GoG, EGS, or any of other multitude of stores on PC. Microsoft can only track purchases made through the Windows Store, or purchases of games they themselves have developed. Example: If I buy Halo MCC on PC via steam, MS knows I spent that money, because it's their game. If I buy a 3rd party game through the windows store MS once again knows I spent that money, because it's their store. But if I buy a non-MS game on Steam, GoG, EGS, or any other PC storefront MS has no way of knowing I bought that game. 

All those stats say is that those that spend more time playing games, play more games and spend more on games, are more likely to subscribe to gamepass. Which makes perfect sense. As a metric on the effect of game pass, it says nothing. For all we know they could be spending less than before subscribing to gamepass, just on average still more than those that don't subscribe.

Are you still trying to prove their data is wrong by coming up with your own strange definition, what their ecosystem is?

Microsoft's gaming ecosystem is NOT all Xbox consoles + the whole PC platform... Microsoft's gaming ecosystem is all Xbox consoles + a part of the PC platform (the Windows store). They never claimed to track all sales of the other PC stores.

Or shall we also define Sony's gaming ecosystem is all PlayStation consoles + the whole PC platform, because PSnow is available on PCs?

Context matters, if folk can't understand context then that is on them. For something so obvious it is the first time I've seen someone suggest this and most fans assumed they were talking about their own ecosystem.

If Sony owned Windows, then yes we would define Sony's gaming ecosystem as all Playstation consoles + the whole PC platform. Especially if the vast majority of Sony titles were available for purchase on PC. 

...Why would you define Sony's gaming ecosystem as the entire PC platform simply for owning Windows? They'd also have to own Epic Store, Windows Store and Steam...

There's another option, you're seeing what you want to see, this is the first time I've ever seen this line of questioning, Lol.

Overall doesn't have to mean the entire industry when we're talking in the context of a specific ecosystem.

The bolded does make sense even in the "gaming overall" context, because they're talking about their own ecosystem. If you asked me it wouldn't be the same context because I don't work for any corporation, so of course I would give a comment on the overall industry, if you ask a company, why the hell are they going to mention numbers for Sony/Nintendo which they don't know? They're going to talk about their own ecosystem because that is what matters most to them.

Context matters, if folk can't understand context then that is on them. For something so obvious it is the first time I've seen someone suggest this and most fans assumed they were talking about their own ecosystem...Where are the folk suggesting that she meant the overall industry apart from you?