This is exactly what makes the hardware different. Also price. You cannot just replace one thing with the other without increasing the price to $2k. The supply chains are independent. It doesn’t matter that the schematics and actual usability are the same.
The different price of the components is exactly why you can’t complain about moving the customers to the front/back of the line. It’s an independent line.
The delivery doesn’t matter. The original price of the chips is very different.