Of course they did.
The effect of Walmart is felt even in industries that have nothing to do with them. In fact, WalMart affects industries that do not sell to them, more than those that do.
How Walmart deals with large vendors is extraordinary. So far beyond how any other business has ever done in the history of markets.
Walmart conducts business with vendors in this way:
1) Here is the price we want to sell your item for.
2) Here is what we will pay for it.
3) We understand that this is 20% below what you can sell it for and make a profit, but we want YOUR product on our shelves.
To make this happen, WalMart will...
a) provide all of the transportation costs, we will pick your product up at your factory, and we will distribute it all over the nation.
What you need to do...
a) You are buying your raw materials from Company X. We located a manufacturer in Indonesia that can provide these materials for 15% less. You will need to buy those materials from them in order to meet our price.
b) Unfortunately your assembly plant in Georgia costs $2.00 per unit to assemble. In order for us to be able to sell your product for the above price, that has to be no more than $1.20 per unit. We would like for you to be able to find a way to do that in Georgia, if not we have taken the liberty of discussing your product with Company Y in Guan Mexico. They have agreed to assemble your product for $1.15.
c) We will assume that $.05 savings, we will sell the item for $.03 less and will keep the other $.02.
Any questions?