For me, the first thing I’d do is clear my family of all debts(or whatever financial issues) there is and then the second thing i’d do is buy a hundred Siomai for me to eat
What are you buying if you won One billion dollars?
Controlling shares in smaller mining, green energy, & electric component(motors, solenoids, etc) stocks, and merging them together for vertical integration. Machinery, logistics, & other production stocks, merging into a separate conglomerate for vertical integration. Cargo boat manufacturing companies who specialize in low emissions. Politicians to get more subsidies in those areas, and promote my business practices while penalizing others.
Supply, production setup, logistics, I might throw in marketing just so they REALLY don’t have to go to anyone else. Any business who doesn’t want to worry about the dirty work will go to me. And they will listen to me…