Any payoff for the US is a long way down the road and any implicit security guarantee based on US interests in Ukraine is dubious at best.
Another and perhaps clearer example of the importance of this little-mentioned aspect of international relations is in China's Belt-and-Road Initiative of loans with bribes for infrastructure projects to various corrupt and foolish Third World countries. When the projects fail, China swoops in and enforces the loan, often with severe penalties and extortionate terms that yield de facto control of the country to the CCP.
Despite much criticism, China is within her rights under international law. Russia used the same approach during the Cold War with considerable success. Marxists would cheat or shoot their way to power in a Third World country. The new leaders would then go to Moscow and sign trade deals that effectively made the country a Soviet colony. Cuba is a prime example.
For Ukraine, a quick minerals deal with Trump and the US ought to have been a no-brainer. The problem of course was that Zelensky followed the advice of the Democrats to balk and make trouble for Trump. Now, even Zelensky knows better, so a deal gets signed.
We'll do a bigger deal with Russia eventually.
It is only about Russian/Gazaprom Oil/Gas Pipelines in Ukraine before the war ends. The US wants to get pennies on the dollar in the expected Nordstream trade to save Germany’s A$$.