I was thinking more in terms of replacing simple electro-mechanical systems with more complicated transistorized ones. Not adding excessive touch logic BS to stoves :)
For example, prior to the early 60s, cars had generators. No silicon in them at all. The voltage regulator was basically two relays, and a bit of electro-mechanical trickery. very simple. If one contact failed, stuck on, a parked car would kill it's battery, if the other stuck on it would overcharge the battery when running.
Generator output had to go through the brushes, as there were no diodes available, so the commutator was used instead. In an alternator, only the exciter current goes through the brushes, which ride on sliprings and wear substantially less. (both because there are no gaps in a slipring, and because the current is minuscule compared to output current).
The cost to this was 6 diodes for the output, and a few transistors worth of voltage regulator. More complicated... but the result is greatly increased power for the same size, greatly reduced service interval, etc.