I suspect for electric ranges they've historically used relays instead of solid state triacs or the like?
[https://electronics.stackexchange.com/questions/279752/why-a...]
If so, relays have significant switching times and limited cycle counts due to arcing - especially under load. Enough that sub-second switching times will wear them out pretty quickly, and also be annoyingly loud.
At the power levels we're talking about for a resistive stove, solid state is expensive. At the voltages we're talking about, it's also not trivial to do in a reliable way using solid state techniques (240V RMS =~ 340V peak).
