If anything, this supports the idea of why filesystems and file associations matter more than your app model.
Only if you train the users. My point is: they can't even handle the simple version. You expect them to survive with complexity?
Yet we are being synced by iCloud to our desktops, are we not? Apple's model is to have all your files on every device.
Again, I would say this is related to usage. An individual, with "several" files, can use this system perfectly well. If you are in a business, with thousands of files, you'll have a computer-based server, anyway. And frankly, I would rather use a good RDP app than try to download files to an iOS Word or Pages whenever I did need to do something on the phone. Just like everyone already does with laptops, that system works better for storing the files, anyway.
Then educate me. All I have been told so far is that "you are wrong because you are wrong". Apple said they make a slight profit. With billions in the bank, a slight profit is likely tens to hundreds of millions. That's a LOT OF MONEY. Unless we are arguing about the definition of "a lot", I don't see how your statement makes much sense.
If the numbers above are correct: 189m profit on 5.7b revenue, that is a 3% net income, well below Apple's overall margin, I believe. One simple error could swing any size number by 1-10% in a heartbeat. Not that Apple's accountants seem to make many errors, but a .5b adjustment can easily happen in a business of this size. What if a tax law changes, or their auditors decide they need to adjust the depreciation on the server farm for new industry standards? That would put them at a net loss larger than the current income in one minute. (or increase their income 2.5x the other way) Size of the numbers must be considered relative.
Of course, if you are comparing to an individual's financial world, yes, 189m is a lot of money to virtually anyone. But that is a useless comparison, because of the size difference.
Put another way....Apple claims to be running this store at break-even. That means, they have set the percentages (30% cut) to just cover expenses. The purpose in doing such a thing is to make sure the store remains open, not to make a profit. (unless, of course, you feel they are simply lying through their teeth) Obviously, being in the black is superior to a red 3%, so they are doing a good job. But since they have set in stone their cut (just imagine the uproar if they suddenly said, "we want 35%"), controlling expenses is the only way for them to alter their situation. I'm sure there are people looking at it every day trying to get them to 5% profit.
And I didn't even mention that so many apps are free, giving Apple zero revenue, but just as much expense.
Another, more important (IMO) thing is how these "file-less" systems will interact. Will absolutely nothing nothing installed, downloaded, or created on a Mac work with Windows (a la the olden days)?
Olden days? Other than the apps themselves, I've never had much problem converting between the two, since the early 90s. Once I even had a Mac Centris, or whatever the name was, with a built-in 486 Wintel PC. Office was out on Mac first, you know. I'd say there is less compatibility today than 20 years ago. But that is not so much file types (DRM books excepted), as it is with Apple's networking/communications solutions like iCloud, iMessage, etc.