I'm in the UK though, maybe it's something to do with having 230v supply?
With cooking it's all about efficiency of heat transfer, latency of power change, and flexibility of pan lifting between the three types of hobs (electric resistive, induction, gas).
The efficiency of electric resistive and gas is poor, induction is great.
The latency of power change of electric resistive is poor, induction and gas are great.
Flexibility of pan lifting of electric resistive and induction are poor (lift more than a couple of centimetres and you have no heat), gas is good.
So built-in stoves or cooktops will take 240V but a portable single burner induction cooktop would likely only use 120V.