I remember reading that Intel was having TSMC run off the lowest end Altera FPGAs because Intel's fabs were just too expensive. Other possibilities off the top

I remember reading that Intel was having TSMC run off the lowest end Altera FPGAs because Intel's fabs were just too expensive. Other possibilities off the top of my head might be Cadence being able to do stuff that's now required for these smaller and using EUV lithography nodes, and/or a backup in case their "10nm" never makes it, and their "7nm" having problems or also failing. Embarrassment should be preferable to the worst case alternatives, and we have no reason to believe Intel will be able to regain its ability to move to smaller nodes.