It's not just for "getting stuff back." It's capital. It can be used to buy up or create dividend producing assets. Nations that accumulate capital can invest it, and through the magic of compounding interest and capital investment they can race ahead of competitors.
> countries with trade deficits are like new companies that get a loan and go do something useful with it
This way of thinking is so at odds with historical reality I need to know where you encountered it. Every great and ascendant nation has run consistent trade surpluses. Nations with trade deficits are either banana republics or headed that way.
The US trade deficit is not from imported capital goods. The US imports consumer products.
The US now runs a trade deficit with every region of the world. The US has a net trade imbalance in every category of industrial/scientific machinery and high-tech products.
Sorry, there is no way to spin trade deficits as positive.