Current world GDP was $85.24 trillion USD in 2020. (https://www.statista.com/statistics/268750/global-gross-domestic-product-gdp/)
Something tells me that the figure of $150 trillion over 30 years is... optimistic. Government planning tends to underestimate the time a project will take, and vastly underestimates how much money will be poured into the project, due to the amount of graft and outright theft that are usually involved. Oh yeah, they probably won't come close to achieving their goals, either. But lots of people will become very rich along the way.