whichever way you look at it, it's not his money.
Someone has to pay for it. It's very well to pretend that the money will come from internet companies or the top 5% earners, it's another thing to make that happen.
If the British government increases taxes above the EU's, they will move their HQs or divert their income there, the divestment will crash the Pound in the same way that pre brexit damage to investors confidence did to the Pound.
Nationalisations, big infrastructure investments are not a panacea to get out of recession free. There will come a moment in time where large borrowings will push the the balance of payment to intolerable level..
Then the PAYE taxpayers will become victims of the same sort of propaganda that brought us brexit.