If you want to move less atoms than the standard(a standardized shipping containers worth), you are going to pay a premium for either the wasted space or for some other agent to figure out how to pack your shit with 100 other small customers and then also unpack that shit at the end and send it to the correct recipients.

This is quite literally, one of the benefits people are referencing when doing commerce in large quantities when they mention “economy of scale”.

In computer science terms the shipping containers are like bits. They either exist or they don’t. If you want something with more precision like an integer or a float, you can make it happen, but it’s more costly in terms of resources