Thanks. Those are pretty pricey, though. Also, exOUtlet2 isn't wifi, I believe. Just Ethernet. Now, smartphone capable wifi switches are a few tens of dollars, I believe.
I should add that I'd like to do this on a Mac. Google Assistant is a possibility, I guess, but MacAssistant is beta and buggy.
Now, I do know that there are VERY cheap wifi smart switches (e.g. Sonoff @ ~$5) that run via Android/Google Home. So in principle an Android emulator (e.g. Bluestacks) will make it controllable on a PC. The question is whether there is some simpler way to do it.