You can pay the most if you can get the most value out of it

No, you pay the most if you believe that you might get the most value out of it.

Moreover, the AI companies have not bought anything with their own money, but with the money of naive investors who believe that their money will be used by the AI companies to buy things out of which they will be able to get the most value.

So for now, this is strictly only speculation, which has driven the prices sky high. It remains to be seen who will really get any value (besides Micron, NVIDIA and the like, who have got good money for their products).