[shadowgovt]

It's definitely been considered because it has definitely happened before (explore the history of Google cutting ties with China for about a decade).

... in response, Google took measures to prevent that category of insider-knowledge attack. With audited builds, zero-trust internal model (xref BeyondCorp), and infrastructure cross-checked by multiple human beings to guard against hardware-level attacks, such an insider attack is infinitesimally probable now.