I agree with you, because many developed countries in the world today their citizens done a great work that made them to be among the richest countries in the world. Some of the citizens invested a huge amount of capital on a particular project that accommodated a huge amount of people that is bringing income to the government account. That is why many countries are trying their possible best to make bitcoin legalized in their countries, so that their economy will grow higher for their citizens to feel the impact of decentralized currency in every areas of the countries.
Yes, the right investment can affect the development or economic growth in a country.
One theory from Harrod Domar explains that investment activities are considered to be one of the important factors in 2 roles to have an impact on the economy.
The first is that investment has a positive relationship to state income. The easier the investment process in a country, the higher the state income will be.
Second, investment can also increase the production capacity of the economy by increasing the formation of the capital stock.
Because the formation of capital can be considered as an expenditure that can increase the demand for community needs.