Wish farming

[zot]

What if a high IQ wizard summons a demon, fails the IQ contest to gain a wish, and casts Word of Command: Surrender?

The RAW says the a demon immediately attacks if you cast a spell on it. Does that counteract the word of command?

Are demons immune to control spells of any sort, like Control Person, Geas, and Word of Command (or should they be)?

What about The Little Death?

These spells seem very useful for "lesser wish farming" and seem to take the danger out of trying to gain a wish...