"How can one party reserve the right to unilaterally change the terms?"
When it comes to business to consumer contracts, often they can't, due to "unfair terms" clauses in a lot of consumer protection laws.
In this specific case, the fact you can opt-out retrospectively (and inconveniently of course) is certainly due to those laws.
I dumped my satellite TV subscription service last year when I realised all we ever watched on it were on-demand services. I hooked one of the dish feeds into the TVs own socket since it was there, but beyond testing it worked it's had no more than an hours use in the last six months.
We just watch stuff on the TVs streaming apps instead of the satellite decoders streaming apps (saving about 100kWh a year).
One of the few times we watched live TV, it was just on in the background and we realised the show that was on seemed interesting, we'd missed the first 10 minutes but there was an option to press a button and open the on-demand app and restart immediately from the beginning.
Just make sure they have audio out too (unless your source can drive a soundbar directly). I just got a new monitor that had built in speakers. They're dog shit, and I didn't plan on using them anyway, but I hadn't appreciated how useful it was having a device that can decode the audio stream from HDMI or DP.
I still have my old usb soundbar for the times I want a loudspeaker, but I can just leave my headphones plugged into the monitors jack and switch the output device on the computer.
And as Elon found out, mandatory arbitration clauses can come back to bite you, like when a large number of claims have to be paid for separately all at once and can't be consolidated to save costs.
The legal term is "consideration". To form a contract you must have three elements: Offer, consideration, and acceptance.
Unfortunately, I'm not sure it would help here. They would argue their consideration is whatever online services are tied to the product, but even without that, the contract isn't being formed at this point (unless someone is going through first setup, at which point they can still return it). The contract was already formed and this is an amendment to those terms that the original wording likely has weasel words to permit.
That's not to say the consumer has no recourse, consumer rights are probably the best bet. If the previous terms don't expressly grant them the right to take away access to all features in circumstances like this, it may be possible to find them in breach, but unfortunately EULAs are usually pretty toothless when it comes to penalising the vendor.
Aww and I was looking forward to a chipped windscreen requiring the replacement of the entire cabin, unless the car had ever been in the rain, in which case fuck you buy a new one.
Globally, while the world doesn't need more humans, and a decrease wouldn't be a bad thing, the birth rate needs to be close enough to the death rate that the population doesn't drop too fast. If it does, an aging population will suffer as there aren't enough working age people to support the retired. Boomers will be fine, as will genx most likely, but Millennials and Zoomers would get hit.
Globally the population is still rising, but some parts of the world already have the issue with not enough children being born to support the current workers. The solution is immigration, which is where the likes of Tubberville take issue. They're concerned that the right kids are being born.
I'm aware of the community this is posted in, but my kid talks to her grandparents via the chat features in Google photos. Works over WiFi with specific contacts and no phone number required. It lets her show them pictures she's drawn.
Google are involved of course, but there's no algorithm pushing promoted posts or any of that BS
If you're not at home, you can easily find flat surfaces to prepare your food on, known as benches. They are available in any park that hasn't had them removed just to spite the homeless. You can also add butter to your park bench sandwiches using a credit or debit card.
!I actually knew someone who did so while making food to sell at a funeral to raise money for the deceased.!<
Don't even have to pay for the base game (which is everything except the current expansion) now. The game is free for the first 20 levels (with social interaction restrictions) and with the rescaling at the end of the last expac meaning you can play those 20 levels in pretty much any part of the world (of warcraft).
The current xpac is a one off cost still, with the sub required to access the end game levels and remove all the social restrictions.
"How can one party reserve the right to unilaterally change the terms?"
When it comes to business to consumer contracts, often they can't, due to "unfair terms" clauses in a lot of consumer protection laws.
In this specific case, the fact you can opt-out retrospectively (and inconveniently of course) is certainly due to those laws.
But like you say, it needs to be tested.