@CoachMark It's busy work for rubes and a guerilla marketing campaign for the buying blitz that will happen on the following day each time, when the giants won't need sale prices to make bank.
Unless it's a mom-and-pop operation, a one-day boycott might even look like a profitable event to global corporations, due to people stocking up before and going nuts afterwards.
A buggy whip will not start an automobile. I think this is a buggy whip approach. Great for 1965.