You need to travel rather than just hearing about boogeyman stories online. Most of the world is relatively poor. Who do you think is about to catch up? Indonesia? India? Have you seen these places? Their economy is big largely due to their population size.

You’re defining collapse in a very unique way here

A lot of the "growth" is debt and money going in circles. We'll see how much of it actually stays around next year. So far the US already has to bail out the datacentre expansion by funding transmission lines upgrades instead of asking for money for it from the companies.