When was the last time you paid your smart kettle, vacuum or lightbulb like IOTA proposes?

I live in a smart home, it's way more advance than anyone I know and everyone comes round to see the latest additions. There all expensive devices to buy but work great. Have i ever paid them? No. Would I want to pay them? No. Would I want them to be capable of being charged or making payments? Not that I can see? Surely this technology is actually only going to result in owners of IOT devices being charged more for the devices that they've already shelled out a lot more for. I've not actually heard any use cases that actually would benefit your average IOT owner in imminent short term. Out with geeks (like myself) thinking that machines paying machines sounds cool. Has there been any market research done by IOTA outwith the Crypto & fintech space that people actually want or have a need for devices with this technology? If someone handed me two smart kettles and said this one cost you what you paid for it & this one you buy but can it also send and receive payments, I know which one I'd go for. IOTA cite the many IOTA devices that exist but ultimately I would be interested in any market research that all the people who own those devices actually want it. Does any exist?