This whole discussion started with this statement from me: "For regular users the need for storage has in fact gone down the last decade".
You seem to point to examples of use which isn't very common for what I would call 'regular users' any more.
I don't subscribe to the idea that a main household computer (or any desktop computer) should "contain all the data of a household". I grew up with PCs when they had no local storage at all.
Also you seem to do a form of computing which isn't very common for regular users anymore and which Apple has abandoned: A (desktop) Mac is a mothership which contains all data. Other devices (iPhones, iPad) connects to the mothership for backup and synchronization of data.
My argument is that most regular users wouldn't have needed 1Tb of storage in 2019 either.
Most regular users don't connect their iPhone to their Mac to create an backup. They either use iCloud or don't backup at all.
Here's why so many regular user's have less need for local storage than before:
* No storage of movies or TV-series (replaced by streaming services)
* No storage of local music library (replaced by streaming services)
* No backup of iOS devices (they never did it or replaced by iCloud backup)
* They don't do Mac backups by themselves so they don't have a need to have everything local to make a Time Machine backup
* They don't care if data is stored locally or on in the cloud, mostly convenience and price determines what they prefer
It's causing a problem for you because you haven't changed the way you are using a desktop computer and you aren't willing to solve the problem by spending more money.
The main reason why Apple isn't providing a 1TB SSD as default, is because it is much more expensive than a 1Tb HDD.
The only reason the new iMac now ships with 256GB storage as standard is because when Apple changed from spinning drives to SSD, they initially went 256GB as (at that time) a 1TB SSD was prohibitively more expensive but that's not the case now.
It's got nothing to do with 'regular users' (whatever they are) suddenly changing or any other of the excuses you gave.
The latest Tomb Raider trilogy is an 80GB install alone...that is typical use.
Editing some footage in iMovie...that is typical use.
Having multiple user accounts on one iMac...that is typical use and for all those things 256GB is simply not enough.
Apple have perniciously been increasing the price of their products and 'hiding' the increase by lowering the spec.
No RAM increase on an iMac in 9 years and storage a quarter of its 2019 model.
In 2019 a 4k 21" iMac cost $1299 and came with SD port, Thunderbolt ports, ethernet port, 4 x USB 3 ports, 8GB Ram and 1TB storage.
In 2021 the corresponding model features no USB A ports, no ethernet port, no SD port and a quarter of the storage.
If you spec it up correspondingly the 'entry level' iMac is now $1729 - that's a $430 increase.
it's not okay and they should be taken to task about it - especially by the media who's silence on the matter is deafening.
Apple have done this with most of product range too. Mac Pro being the most obvious example, but also with iPhones.
In 2016 a flagship iPhone 6s Plus cost $649 an iPhone 12 Pro Max is $1099 - another $450 increase that no one mentions.
I'm aware that products cost a more to make over time, but an increase of 70% in 5 years is (again) taking the piss.
Being silent on it because 'it doesn't affect you' isn't an answer and it's shameful that you should use that as an excuse.