How RWA tokens(ERC3643) pegged with their underlying asset?

I have the following questions regarding ERC3643 tokens, widely known as RWAs:

1. Say for NVDAonThe asset value is determined from the NVDA stock, right? But how is the value of the NVDAon token changing on non-trading days(Weekends & holidays)?
2. Can the value of the NVDAon(the RWA) Becomes zero if all of the holders withdraw their holdings, just like any standard ERC-20 token?
3. If the value of the ERC3643 token is pegged with the underlying asset, then how are they different from each other, but with this much larger margin? ( As of 1.12.2025, NVDAon is 174.80 & NVDA is 176.98). This means their value is being determined based on their traded value?