Is it possible for bitcoin's price to crash to zero?

It is technically possible for any cryptocurrency's price to crash to zero, as seen with the Terra Luna price crash. But, for something as popular and valuable as Bitcoin, some huge shifts would need to take place to allow for such a catastrophic loss of value. It's important to understand Bitcoin's functionality to understand why this is the case.

Can BTC go to zero?

Fiat goes to zero because BTC is the bedrock of all transactions So yes, BTC can go to zero in a world where that zero is in fiat, because fiat doesn’t exist anymore.

Can bitcoin go to zero in a world where Fiat doesn't exist?

The West throws in the towel on democracy and becomes an autocratic dystopian hellscape Fiat goes to zero because BTC is the bedrock of all transactions So yes, BTC can go to zero in a world where that zero is in fiat, because fiat doesn’t exist anymore.

What will happen to bitcoin if there are no buyers?

Bitcoin will continue to have value and it is unlikely that the currency will reach zero. The value of Bitcoin rests in supply and demand, and so if there are no buyers of the currency, then all sellers will just sell as well.