1 - Own all of Crypto UBI
Make a massive investment in the GoodDollar project (https://www.gooddollar.org).
Have them move it to EOS.
Put a billion dollars in the GoodStaking contract, so that you have a billion dollars generating interest into a permanent, world-wide UBI. On EOS.
Own the definitive cryptocurrency implementation of the Universal Basic Income concept. The Bitcoin of UBI. On EOS.
2 - Own the best scaling solution
They should also buy Cartesi (https://cartesi.io) to scale EOS since they aren't (or even if they are) going to invest in sharding the mainnet. This one is more difficult to explain, but if Block one is interested I can explain both projects to them.