Both networked and remote controlled plugs have been around for ever, more than 20 years.
Time operated kettles since 1930s! You can only use them once without a reset because of the WATER. (the power switch can be left on).
Zanussi or such does a nice mounted in the wall plumbed in coffee maker. So you don't have to refill the water. You DO have to refill the coffee.
The "teasmade" timed "kettles" are still made. A £10 timer plug and £10 kettle will do the same, but doesn't pour automatically into the cups.
There is a niche market for this late to market product. Or less, as the competition is more flexible. This is a 0 out of 5 product.