Intel owns their own manufacturing process so they can crank out more volume than TSMC can on the smaller process nodes. TSMC Has a roadmap to 3nm by 2023, Intel is looking at 7nm by 2021.

Unless Intel manufactures on TSMC's line, AMD will have a clear, near double to triple performance advantage for the next 2 generations. You're going to see Intel become the value brand for awhile and they're trying to avoid that because they are used to a cash cow.