As opposed to Google's "Don't be evil", a commandment for the everpresent, "the organization is a future adversary" acknowledges the realities of the future, that it is uncertain, and in fact, that power-dynamics-wise, there will be pressure to make things worse.
Making design decisions in the present which guard against the future is one of the most important things we can do. It is one of the most important reasons to choose FOSS licenses, for instance, which provide an exit plan and also counterbalance against temptation to enshittify a project.