We could squabble about the finer details of Intel's fab capabilities. They have advanced nodes, but it's irrelevant. They simply do not have the capacity to support the entire demand that is currently supplied by TSMC.
It is not just "high end luxury electronics" that have modern CPUs. It's every bloody server in the cloud. (Have a look at who makes and distributes the mainboards. Same story, substitute Intel for Supermicro.)
The economic impact on this field would be a disaster. Compute becomes much more expensive, SaaS prices will follow, and with that a massive drop in demand.
Not to mention you can kiss the entire AI industry goodbye if the price of GPUs spike.