Well, it depends whether these projects can increase productivity (i.e., the ability to produce goods and services) or not. With this in mind, I'm pessimistic about these projects actually because I don't see it can affect productivity that much.
Do you know what can change the economy? A new coffee variety, which can boost your mood and energy for at least 8 hours.
Good economy gives birth to financial stability of the country, and blockchain has the ability to eliminate barriers that has made some factors that should affect economy daunted. First thing I know blockchain technology does is to cut cost, it is cheaper to run system using blockchain than the normal traditional method, also don’t forget that blockchain will surely create more job, and we have some countries that would specialize in this area for other countries to higher their citizen as expatriate, which means more money to that country’s economy.
Aside the employment it would create for country’s adopting blockchain technology, it will also help them have some transparency in their dealing with project consultants. Another thing blockchain means for countries that adopt it is more money for them when they trade with it.