> Doesn't the US get / consume something like 25% of the world's production while having about 5% of the population?
It did this by running up an impossibly massive trade debt since Reagan. This is not something that can be done endlessly, unless you're going to "start" invading other countries for resources.
It is far, far from impossibly massive. It is, for example, entirely comparable to a typical mortgage:income debt ratio. It is lower than the debt:GDP ratio of several other countries (including Japan in the recent past) that did not fail as a result.
It also can't be done (in the sense of grown) endlessly if the only tools brought to bear upon it are the ones of heterodox economics and the historical policies of the two major US parties. You don't, however, need to invade other countries. You can take the sort of approach MMT advocates, for example.
It did this by running up an impossibly massive trade debt since Reagan. This is not something that can be done endlessly, unless you're going to "start" invading other countries for resources.