Financial inclusion of common people: Bitcoin can contribute to the economic growth of a country by including a large population by opening access to savings and buying and selling beyond the limited services like conventional banking system.
I believe it depends on the mindset or the thought process of the government and officials in charge of a country. In most countries, governments and authorities don't want financial inclusion for the common people because that would make them weaker over time. They wouldn't want the common people to have financial inclusion and be able to manage their finances on their own because if that happens, their people wouldn't depend on them anymore and that makes them lose control of the people.
Remember, the best way to control people is to always keep them dependent on you for at least something because as soon as they become completely independent of each thing, you won't be ruling them anymore and they won't need you.
A country that has a government that works only for the people and doesn't have such thoughts might have economic growth using Bitcoin.