Are you really that dumb? Your money "frozen" in raw materials (from which you make goods that you later sell) earns you revenue. And as long as it is above inflation, you are still making profits by any means.
So, for you, if you need for $ 10 000 000 of material during a year, or you only need $1000 of material during a year, if in the end you sell for $200 more than the expenses you did a year before, you made a benefice of $200 ?
As I told you, good luck with your business
It just means that one business is less profitable than another, that's all. As long as profit earned is above inflation (mind this), the business is sustainable in the long run. Which will never be the case if it continuously suffers losses due to deflation, whatever interest rates might then be. I don't really understand why you are trying to argue against this simple fact.