This is more than a one-time upgrade: once a Windows device is upgraded to Windows 10, we will continue to keep it current for the supported lifetime of the device – at no additional charge.
People will still latch onto the definition of "Windows device" and "supported lifetime of the device" but at least it's more clear than the linked article.
As with red light cameras, it depends on the implementation. I won't go near the state of Arizona again without a damn good reason. I went on a southwest road trip maybe five years ago and speed camera vans were everywhere. That would be fine because I've got cruise control and set it for the speed limit (yes, I really do) except the speed on the interstates varied randomly. Cruising along and there's a speed limit sign 10mph slower than the current speed and, shortly past that, a van with a speed camera. If I were coming into a populated area, that would be one thing but it's out in the middle of the fucking desert. Over and over. I kept an eye out for the changes and adjusted accordingly but I was surprised that I didn't get a ticket in the mail. It would have been easy to miss a speed change in an area that has no need for a speed change. A lot of my attention was diverted to scanning for road signs instead of watching the road. I've heard they ditched this program but I don't plan to go back to verify.
If they were using these automated systems to catch people who are already violating traffic laws, that would be one thing but the local governments (or their agencies) often manipulate the situation to create violations from people who wouldn't normally commit them.
What about the impact of apps that can't be transferred to a new device? I have a couple of time-waster games on my first tablet that can't be moved to a new device. A top question on their FAQs is "How do I transfer my game to a new tablet?" "You can't. Too bad, so sad." I wonder how many people are reluctant to upgrade because they spent $50 on crystals in some game and they don't want to throw it away.
It's the same transition television had when going from SD to HD. Makeup, lighting, and set design all had to change because the increased clarity of HD exposed the flaws. It's like turning on the bright lights in the bar at 2am. Raw and ugly.
As filmmakers learn to work with HDR, films will look better. Same as when color hit the market. And sound. And the transition to film itself.
I know the difference between compression and sound disappearing then coming back. And compression doesn't create warbly flanging effects.