RFCs are written and discussed, but there’s no mechanism by which they’re formally adopted or rejected. Organizations choose to implement them (or don’t); they become standards through widespread voluntary adoption.
This means that, if engineering organizations naively adopt an RFC process without bolting on some sort of explicit decision-making step, the process quickly breaks down. Without some sort of process to move towards a decision, the default outcome of an RFC is “no”
The team operating an RFC process inside a company must bolt on their own decision-making process. Usually, that’s via authority.
This is also why I personally stray away from a true RFC process at work - it’s built for decentralization and long time-scales, while a corporate setting is tightly centralized and biased to speed.