It was hypothetical - theoretical. Today's Operating Systems are seriously flawed. The need for constant updates and patches are a major headache. It's almost like a car that endlessly needs to keep going back for recall issues. The technology is simply not there yet. On the other hand, phones don't need to be constantly updated to function properly. Then again, the endless upgrades of devices from version 1 to 2, 3, 4, 5, 6 etc...,,, is also a major factor. One does not need to upgrade / replace a microwave oven unless it is broken. It is obvious that all computer Operating Systems are flawed.
My theoretical device would be set in stone, not needing updates. This type of computing technology does not exist. I said "I always thought it would be a good idea" ... just dreaming.
These are good things, right? ROM OS's are a step in the right direction for an appliance device.
The fact that Windows needs regular security and other updates makes it clear that the OS is like a colander.
Embedded systems working in industry serve a particular function do the same thing millions of times without updates.
I think you analogy is flawed. If you compare a PC to a microwave your PC would look like this:
- you buy a PC to have one single function (i.e. Word)
- that function would be from the year of purchase (i.e. word 2003) and never be updated (like your microwave has the same function today it had 10 years ago when you bought it)
- you buy the hardware from the same manufacturer as the software, don't have hardware choice
- you don't have internet access
- you can't replace hardware (i.e. you want a new graphics card, more memory, an SSD that didn't exist at time of purchase)
- if the manufacturer discovers a flaw in their programming, they force you to buy a new PC instead of sending an update
(i just realized I'm describing a Mac....)
If you are OK with these limitations, you are right, a ROM OS would be better and never needed updating.
But people want their microwave be the newest every day (like adding sideway-spinning plate), have it wash the dishes, bake and keep food cool. they also want it to download recipes, and tell you in your workplace how the food is at home. and people want a choice of (cheaper) microwave models because offering more hardware manufacturers reduces prices. People also want to upgrade hardware.
so unless you really want the PC as limited as your microwave, you will need updates.
And the argument that cars don't need the updates is even more laughable. Google for the news of recalls and you see that car drivers are beta-testers. and many of the car updates literally are software updates as well. Some of those are not even recalls, they just apply them when you bring them in for service