Again, for the fifth time, according to the IRS, Business Taxes are under $200 Billion. According to NIPA, US consumption is at about $8 Trillion. Only the fuzzy math of Fair Taxers tell us that $200 Billion is 30% of $8 Trillion. No one can refute these facts. From what I can tell, you are about $2.2 TRILLION short from telling me where all these costs reductions are coming from so businesses can lower their prices to offset your 30% tax.
No, nobody says that except you. And it's really a dumb statement.
If you find someone else saying it, let me know. Hint: it won't be there.
What will be there is something different than you think. You are unable so far to understand that there are costs to the income tax system other than the tax themselves.
For example, I'd be willing to make and sell more of my product at its current profit... but by earning more, my marginal profit decreases to the point I choose not to make and sell them. Of course there are other types of costs that are a result of the income tax. That was just one.