It would be good if they will not wait for 4 years, because spending 2 billion dollars in blockchain is a big amount to consider, and time is a precious entity we have for development. Let's think about it, if they will wait that long, innovation that they might discover or create if they will invest now will not be achievable. If they already have the resources, they should utilize it and become the leader in blockchain technology.
The article said it was planned, why would you rush things like that? Considering the situation of their economic status, everything should be carefully planned because if you rash things without planning do you think you have the time to turn back if things go wrong?
It is good to know that their leader is backing up the blockchain technology for their future investment but sadly they don't support bitcoin. But anyway, they do support other altcoins too as i think they saw the potential of it to spread the use of it on their people.