Bitcoin's fiscal policy is only one part of the whole bitcoin idea. It is possible to change the fiscal policy while keeping the rest of the crypto-based system.
The fiscal policy is controlled by two numbers which are chosen by 'consensus' among bitcoin users: The reward for mining a block, and the 'difficulty' of mining a block. You can always mine blocks in violation this consensus (eg reward yourself too much), it's just that no one will listen to you, and no one will accept the bitcoins you 'mined'. However, If everyone agreed to change how we choose these numbers, we could change the policy.
I'm pretty sure you could set up a 'bitcoin-2' network which would honor transactions from the original bitcoin network into the new network, yet have different algorithms for reward and difficulty. For now though, it doesn't matter since the current 'fiscal policy' is quite expansionary.
The fiscal policy is controlled by two numbers which are chosen by 'consensus' among bitcoin users: The reward for mining a block, and the 'difficulty' of mining a block. You can always mine blocks in violation this consensus (eg reward yourself too much), it's just that no one will listen to you, and no one will accept the bitcoins you 'mined'. However, If everyone agreed to change how we choose these numbers, we could change the policy.
I'm pretty sure you could set up a 'bitcoin-2' network which would honor transactions from the original bitcoin network into the new network, yet have different algorithms for reward and difficulty. For now though, it doesn't matter since the current 'fiscal policy' is quite expansionary.