[If my competitors are of the Fairtax mind to lower their prices the amount of the income tax they would no longer pay, I'll be that much stronger in less than a months time.]
Only if you consider being out of business as 'stronger'.
By definition, if they are 'competitors' and they lower prices, your share of the market will fall unless you lower your prices as well.
I'm afrazid they'll never understand ... Looey and Dimp-Dimp both have a "little problem".
Dimp-Dimp doesn't understand economics or even the way in which businesses operate and Looey doesn't understand that even more (and is lousy with numbers to boot).
Could it be that they just don't WANT to understand??