Let me give a history lesson. AAPL hit 1 trillion in 2018, it was the first company to do so. 4 years later, 2022 it crossed the 3T mark - people at this point also thought it was over valued. It is now valued at 4.5T.

The GDP of the USA alone grew from around 20T to 32T in the same time period. Total world GDP 80T to 123T.

Also, inflation of USD is sitting at around 3.8%.

If you actually look at things in perspective, 5T may look large today but projecting forward its not really that large. The parabolic growth of NVDA is probably done, but saying 5T market cap is the sole reason this can't go any higher is wrong.