Doesn't that assume that the value of the slots is directly proportional to the price of the product you sell from those slots? That seems like quite a big assumption. For example, I would speculate that having a product shortfall (because you sold your manufacturing capacity) is going to significantly impact your market share and thus long term profitability.

For this generation, NV only makes the flagship datacenter/professional GPUs/A100 on TSMC, smaller GPUs are made on Samsung's 8nm process.

30xx parts are made at Samsung on a process inferior to TSMC's N7/N7P. This might indicate that Nvidia's datacenter/HPC parts are worth more than AMD CPU production, but that's not very shocking. Also it would be bad business to sell your slots to your competitor, so they could have ever greater production capacity on a leading-edge node.