Turning on your computer to do something...only to be forced into a long mandatory update process is a tremendous drag, and it can actually cost someone a lot of money (or other suffering) if it happens at the exact wrong time. I understand that OS updates are mandatory and (mostly) necessary, but how about the following as a much more fair update strategy...
So you turn on your PC and an already-downloaded update wants to install itself. (BTW that whole stealth auto-downloading is a very big and wholly separate problem, too!)
Power-up #1. Windows launches normally, but there is a semi-obnoxious, bright yellow bar, immediately below the task bar, taking up about 5% of your screen real estate. It states that a mandatory update is ready to install and very importantly, it also tells you approximately how long it should take to complete. You are allowed to "X" out the bar and get your entire screen real estate back.
Power-up #2. The same bar appears time, but you can no longer "x" it out, it is persistent.
Power-up #3. This time, it turns RED, and now takes up the entire bottom 10% of your display. You cannot make it go away, but at least you can still work.
Power-up #4. This time, it grows to 20%. It becomes quite annoying to work now.
Power-up #5. This time, it grows to 30% of your screen. You can still do your work, if you really must, but it is a terrible experience and you have now been fully warned.
Power-up #6. This time it stays at 30% but gives you a 10-15 minute countdown to do something, then it forcefully executes the update.
Power-up #7. If you did not let it complete last time, then it does so upon launch.
This all might sound crazy, but the OBNOXIOUS updating of Windows if you leave a device untouched for a while is among the main things that is going to make Google the next Microsoft of the "Average Joe" PC world. Chromebooks don't ever PREVENT you from getting work done when you power them up. That is a deal-breaker in 2019.