Because as a customer you should probably buy a studio display and Mac mini if that's your use case.
Additionally, not having that option lets the manufacturer have control over how much value a product retains after it's useful life. Apple already does this in a number of different ways, and it's disgraceful. iPad too old to get new updates? Recycle, it's not like your backup included the versions that did work for your OS version, can't do much with the hardware. Battery dead? Recycle! Already have a 5k iMac but want Mac Studio for more performance? Well you better like spending a whole lot more for exactly no new value.
Exactly, and it would be even less useless in totality if the screen was still feasible to use on its own.
> HDMI-in port on the iPad and MacBook so you can use it as a display when the internals are outdated?
Now that you mention it, I would like to use my old iPad as a second screen, since it's a mobile form factor already and is otherwise nearly useless for no intrinsic reason. But for the iMac, which is obviously a stationary large screen in an appealing enclosure, it would be a returning feature with a standard TB 4/5 port and cable, like it was originally with TB1.
How about Apple just puts the 2 cent connector & PHY, and let the users who paid for the device decide how they want to use the product. Gaslighting people with the "you're holding/using it wrong" argument today is just .. I can't even express anymore without breaking HN rules.
Yet people who complain about this "gaslighting" from Apple continue to buy Apple products.