[Ygg2]

If two trillionaires bounce a 4 trillion dollar IOU, the GDP could be the greatest in the universe, even though nothing would substantially change.

[munksbeer]

Living standards for the median person in the world improve every year, and have done for decades.

[valleyer]

That's not what GDP means.

[FrustratedMonky]

"(GDP) measures the total market value of final goods and services produced"

It can be circular.

MS invests 5 billion in OpenAI.

OpenAI invests 5 billion in MS.

Do we have 10 billion now?

[valleyer]

No goods or services were produced in your example, so GDP would not be affected. Purchases of securities are not goods or services.