Well the key difference making any superficial similarities fall apart is Nvidia does not have neutral economy-wide goals of maintaining small+stable inflation, near-full employment and stabilizing financial institutions like the Fed does. Nvidia is entirely self interested in protecting their own shareholder value (that includes the incestuous web of investments ultimately ending up spent on their GPUs).

The structure of the Fed is setup the way it is to limit the sort of self-serving, myopic political micromanaging that could be damaging to the economy at large. And, unlike a beneficiary of rapid growth like Nvidia, has (historically) tried to identify potential indicators warning of unsustainable bubbles that could lead to financial contagion and tries to mitigate that risk using the limited monetary tools available and their public soapbox.

A similar decision making structure would potentially be very undesirable to Nvidia shareholders as caution over long time horizons would likely produce what they would consider an excessively conservative, defensive strategy to avoid putting too much air into the bubble too quickly (at the expense of their valuation).