The faster you move, the more you screw up, almost no company producing software have figured out how to move fast and not screw up. It's so hard, that companies even used to boast about how much they didn't care about screwing up, as long as they moved fast.

Add in new "productivity" tools that help you move even faster, with even less regards for how much you screw up (even though the tool could be used for you to move at the same speed, but with less screw ups), and an engineering culture which boils down to "Why not?", and you get platforms run by Microsoft that are unable to achieve two nines of reliability.