Physics dictate that only one factory/office/home/bakery can occupy a particular location. So without the particular land for that particular bakery the bread wouldn’t exist either. People get all confused about basic economics, particularly real estate economics.
In most ways land is no different than other physical inputs in that they are “exclusive”. You can’t use the same wheat in two different loaves of bread are the same time either. And the same baker can’t work in two different bakeries at the same time.
The key thing that makes land different from other economic inputs is that it is immobile. This has many interesting implications but doesn’t make land useless or require a particular ownership system.
Sure you could imagine a different world with different legal system but that wouldn’t change the fact that land is needed for almost every economic activity and is thus valuable. So whoever decides who get to use (i.e. supplies) that land - let’s call them the landowner - is adding value to that economic activity.
Similar discussions around intangible assets are even more confusing.