Crypto addresses a problem which no central bank and its currency can address, transparency.
My first thought when I saw point 9. Financial Institution is he's bought Twitter to get his hands on the code to spread data to all reaches of the planet perhaps to even improve Paypal.
Visa and Mastercard have had problems in the past, their networks have failed to meet shopping demands at peak shopping periods, namely Xmas.
Things like Black Friday are designed to flatten that curve whilst helping retailers offload old stock and clear inventory.
Visa machines also work on POTS and POTS are being replaced by IP based systems. Here in the UK, our POTS system is being replaced by an IP based system which should be completed soon. Other countries like Singapore have been running an IP based system for over a decade so much so that public telephones offer free phone calls.
There has only been one crypto currency so far that could match the speed and volume of transactions of the Visa network over IP but its not penetrated the market with its up take.
The Visa network is currently the arguably best network for financial transactions on this planet, better than BACS, Swift, even the Fed has only just announced its network can do faster payments [1], and different parts of the world have their own payment network. Russia has been developing the MIR network [2,3] which is only used in 9 countries in response the sanctions on their use of the Swift network.
So to me it looks like Twitter might have been a code purchase maybe for Paypal or maybe for something new like a crypto.
Starlink also gives him some advantages like being able to penetrate parts of the planet where telecoms cables dont exist or are not fast enough or are restricted or censored in some way. The satellites might not have the speed of fibre, but he's got a massive chuck of frequency range at his disposal to make up for.
Time will tell, but I cant stress enough the difficulty in shifting data around the world fast enough, thats a massive challenge, but I think he's got a different angle to shift that data which I think Twitter uses.
/s