1. There’s real profit/value expected in pursuing the full automation of the labor market to the extent that the Board will approve large debts to known allies (BH) who only invest in long term infrastructure.
So they are investing in more AI infrastructure with long term capital because they see the payoff in the long term.
2. That also means they aren’t doing market moving plays in public like selling corporate debt because they don’t want to be in the short term froth with a long term bet.
They are considered a very low risk and can borrow for a long time at low rates. They recently issued a 100 year bond.
They seem to have decided to issue equity rather than borrow more. This is probably so that they can maintain the ability to borrow very cheaply in future if necessary.
Issuing new equity might be a financial engineering experiment. No other mag7 has tried it. Plus they got BH name on the plate.
So I guess Google doesn’t think their stock is particularly cheap, but Berkshire Hathaway wants to buy more anyway. (At a slight discount.)