Too often, it's miscommunicated as "criminals keep breaking our monetization scheme" but it's a lot more effective than shaking your fist at the sky.
Frequently the cost of the item is offset by the expected gains from the DRMed consumable; enough people buying the litter box but not their soap would cause the company to lose money—a net negative.
I never wanted a 3D printing hobby, all I wanted was a tool (like a hammer or soldering iron) that I could use to further my actual hobbies. XYZ gave me exactly that. For me at least, I find the descriptions 'scam' and 'garbage' to be nothing more than emotive angst.
Reduce: don't buy water bottles in the first place, as they're one of the biggest pollutants.
Reuse: If you're gonna buy water bottles, reuse them for other liquids when you're done instead of buying a separate vessel for them.
Recycle: When that fails (i.e., when you've got water bottles that you can't really reuse, or whatever…) have that plastic recycled to make, well, more water bottles.
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If "repair" is the "fourth R" in "reduce, reuse, and recycle" that would imply it's less environmentally efficient to repair something than to simply toss it into the recycling bin.
I remember opening up equipment from before 1980, and you were greeted with circuit schematics, diagrams, and replacement part numbers. Replacement of a single component was usually simple, and very cost effective. For some, it may take a few weeks to get the thing, but arrive it did.
Now, people throw out wide screen TVs and all sorts of electronics. Why? A cap popped, or a resistor burned out. Someone spend $399, and it was foiled by a $.05 component. But what about swapping the board responsible? Nope, it's all "non-user-servicable" aka buy more crap you lazyass consumer.
And what this cat litter cleaner ultimately is; it's a device that does a thing as long as you keep feeding money in it from the approved source. It's not like a pillow, or a chair, or a tv. It would be more like those, if it weren't for the fact that built in is a device that obeys its owner - and you aren't that owner; you're the owned.
However, knowingly buying hardware with DRM of this nature only signals the acceptability of this utter garbage to the marketplace. The best way to "hack" them is by not buying it at all, or disassembly if given.
I've seen 3d printers with the same scam as well; "buy our special filament" (aka: rfid chipped garbage). Thankfully those printers are usually stripped for the nema17 motors and switches, and junked for a reprap.
I'm glad people still take to the 4th R of "reduce, reuse, recycle... Repair. But I despise manufactured obselesence in all its forms, especially DRM and phoning home.