By the end of the day, most kitchen and laundry appliances are a bunch of electric motors, pumps, solenoids, compressors, resistances, buttons, switches, and sensors.

If this trend continues, we will have more and more people having bricked appliances as badly designed web services are inevitably sunset, as mobile apps without updates become incompatible with new versions of their phone OS and get delisted from App Stores by the manufactures. Or then, Wi-Fi standards will change, and the appliance won't be able to connect to the network unless you keep an obsolete and by then insecure hotspot just to serve it.

Given that, I wonder if there isn't going to be a business opportunity for creating after-market appliance controllers. Just a board that you can use to replace the one that came with your appliance, but without any factory-controlled web-service nonsense.

This is already a thing for split air-conditioner units. In fact, I even saved one with such an aftermarket board.