[tacitusarc]

Presumably one of the risk mitigation strategies employed by AT&T is reliance on support contracts, which Broadcom is now changing years ahead of expectations, and contra to the terms of the contract (according to AT&T). Relying on support SLAs is a pretty standard part of infra management… why do you think AT&T should not do that?

[autoexec]

I'm not saying this situation is AT&T's fault, but lots of things can happen to AT&T that aren't its fault. Regardless of fault, AT&T must not be allowed to exist as a single point of failure capable of compromising national security period.