These deals aren't for 100% payment up front. The deals also include stock, not just cash. So, no, they do not need to come up with $1.4 trillion in cash quickly.
This AWS deal is spread over 7 years. That's $5.4 billion per year, though I assume it's ramping up over time.
> At the end of all this circular financing and deals are folks that actually want real cash (eg electricity utilities that aren’t going to accept OpenAI shares for payment).
Amazon's cash on hand is on the order of $100 billion. They also have constant revenue coming in. They will not have any problem accepting OpenAI shares and then paying electricity bills with cash.
These deals are also being done in the open with publicly traded companies. Investors can see the balance sheets and react accordingly in the stock price.