> To be a true foundry and also improve national security, they need to be processor designer agnostic manufacturing company.

This isn't obviously true now that Moore's Law is no longer in effect.

When you own the fab, your fab engineers and design engineers can help each other out. When you can gain a factor of 2 every 18 months, this is unimportant. If you can only gain 20% every 18 months, this is much more important.

Intel is about to divest themselves of their fab at a point when it is vital that they cooperate with it. Welcome to American management.