If you genuinely believe that, you are either living in some kind of serious tech nerd bubble, or you have no idea what replacing the OS means and you’re talking about doing software updates, tweaking settings, and installing apps.

The vast majority of smartphone users probably don’t even realize you can replace the OS, and if they do they probably don’t see the need.

For desktops and laptops, around 71% of them are running windows, somehow I doubt people are buying Linux or Mac laptops just to turn around and install windows on them. Then around 16% of them are running MacOS, and I doubt that any significant number of those are hackintoshes. A fair amount of the remaining 13% or so are probably people who have installed their own OS, but not all, some of them are using ChromeOS, I don’t hear much about people deciding to make their own Chromebook, and some people are buying an off-the-shelf Linux device.

Just kind of spitballing

For starters, you design a robot whose design is to take, for example, 100 steps forward, then take 100 steps back. Then you could:

Have it take a scoop of soil before it turns back, you now have a sample to test

Put some kind of chemical test strips (litmus paper, water quality, etc.) on it and send it towards a puddle of water you want to test. It splashed into the water and comes back, now you can see what the results on those test strips say

Not all electronics are so sensitive to radiation, and to some extent they can be shielded. Building a whole digital robot that’s hardened against radiation would be difficult and expensive. Sticking a couple radiation hardened sensors on an otherwise dumb pneumatic robot that doesn’t need to be hardened would be much cheaper.

Send the robot in with analog measuring tools- thermometers, barometers, film cameras (radiation can expose film, so picture quality may not be great, but it’s better than nothing, and just seeing how exposed the film is could be used to get a rough idea of the radiation level) etc.

Say there’s a big rock, and you need to know what’s behind it. Nowhere in the safety zone has a good viewing angle, and it’s either unsafe to fly over the area or there’s too much tree cover so you can do aerial photography. So you stick a mirror on the robot and send it out somewhere behind the rock off to the side o bit. Now you can look at the mirror through some binoculars or a telephoto lens and see what’s behind the rock in the reflection.

These are just a couple off the top of my head ideas as a layperson, I’m sure that a scientist or engineer actually doing this kind of work whose entire job is to think about this could come up with plenty of other good ways to use this sort of thing.

Electronics definitely make things easier, but we’ve had people doing science for millennia before we figured out how to do anything particularly useful with electricity.

Ah, you mean the original “razor and blades” business model that ensures repeat customers.

(Yes, I’m aware that many people who use safety razors these days are not necessarily buying from brands that make both the razor and the blades, I am such a person myself, I’m somewhat joking on that)

But even in the realm of “buy it for life” items, you can still end up with repeat customers. Maybe you want a second razor for your travel toiletry bag, or to keep in your second bathroom. Maybe you just see one that looks cooler, or the handle is more ergonomic, or the way you change the blade seems more convenient.

And BIFL items still do sometimes get lost, stolen, given away, thrown out, or sometimes even broken and need to be replaced.

And unless the world’s population starts shrinking, there will always be new shavers hitting puberty who will eventually need their own razor.

With a DNA test, unless you’re questioning paternity or testing for specific genetic traits like cancer risk and such, once your parents have taken a test, you and your siblings don’t really need to, you know what your parents are so you know what you are.