Oh please, twist history to fit your narrative much?
MSFT thought they could keep on bloating forever, when at the time they had already bloated so damned much that laptops had fans that sounded like jet engines thanks to all the shit MSFT had running. Asus and Dell got a "hell of a deal" (Because we know now Intel was product dumping trying to create a new market) on a shit ton of Intel Atom chips, slap a small screen and some solid state storage or a small hard drive and voila! A netbook, cheap as hell to make and anybody in retail would tell you cheap small and light laptops are easy to move...so what does MSFT do? Release Vista which was a giant bloated hog! You ever try to run Vista RTM on a netbook? Its actually quite funny, you can practically measure boot time in days.
So no shit they went Linux, MSFT wouldn't give 'em the normal bulk rate on XP (because MSFT wanted to push their new hotness whether people wanted it or not....gee why does that sound familiar?) and they sure as fuck wasn't gonna stick Vista on a netbook so they either bought or rolled their own Linux. When MSFT realized they couldn't force the OEMs to take a bloated corpse of an OS to install on fricking netbooks they caved and offered WinXP and voila! Within 8 months they were all running XP and MSFT made sure their next release wasn't so bloated it would run like shit on laptops and even came out with an ultra light version for netbooks.
Of course then they jacked up the price of a copy of Win 7 to kill the netbook...but that is another story. As for Windows 10 Ultimate Spyware Edition being SaaS? Wow you must not know the history of MSFT very well. You see the Ballmernator wanted MSFT to be a bad Apple ripoff and when they punt kicked him they replaced him with....a guy that wants the company to be a bad Google ripoff.
So while Ballmer tried to do everything Apple did but hamhanded and piss poor (see Zune, Kin, buying Nokia so they could make their own handsets) we now have Nutella trying to do everything Google does but hamhanded and piss poor. all the datamining shit is the same that Google is doing but unlike Google MSFT is about as subtle as a raging bull with the shits charging through Sunday Mass so its getting massive backlash. Its just SSDD with MSFT, still 2 steps behind and tripping over their own feet.