Bitcoin is completely compatible with liberal central bank directed credit creation. The bank just needs to have 51% of hashing power. Then it can charge demurrage and give the demurrage fees to banks to lend out.
If someone or some organization decided tomorrow to impose demurrage via a 51% attack, the response would be:
1. What is demurrage?
2. How could I calculate it even if I cared?
3. Just wait until a miner from the remaining pools mined a block with your .001 btc fee.
The US government will always be able to print money as it desires; even if bitcoin becomes 50% of the economy, they will still be able to encourage lending via a low interest rate, as long as dollars continue to be treated as legal tender.
People can always move from dollars to btc, gold, stocks, or anything else with a more stable value than the dollar.