I think that only in theory it will bring a boost.

I say these because many countries are covering their inflation with all kind of schemes just to look good for the new election and keep population calm about crisis. Just like when governments paid for the shit banks did on the last economic crisis.

Having a corrupt system with so many flows, won't make any blockchain adaption better.
Like with any flawed system, changing it will bring pain if not feat as well.
So, before any economy boost happens, it has to get worst before getting better.

For example, if my country would adopt blockchain technology (transparency, security) in any department of the government, that would bring up to light all the flaws in the system. No politician want to bring that to light. So we first need new people in politics, ready to dig up the dirt and start a change. And there would still be chaos. But in time that would turn in a boost in economy. Investors would have more trust to come because of increased transparency, security and stability.