This wouldn't work in a situation where not everyone agrees to abide by the arbitrary rule of using toothpaste (or whatever) in as specific order. In a computer's memory, or storage media, the ordering is intrinsic, but in your bathroom cupboard it is not, and would have to be enforced by convention or some other contrivance. If someone decided they wanted to open the "special" one because they prefer it, or don't care about your weird toothpaste order kink, it all breaks down.
Not all things we do on computers translate well to meatspace.
"Playing well with others" is very common in computers, and it translates well to meatspace too.
There are lots of programming languages that are built on coventions (for example in Python, private variables are not actually protected in any way). We rely on other programmers to know the rules and respect them. Same goes with toothpaste management system, or with deciding what should happen even you finish communal ketchup bottle.
Not all things we do on computers translate well to meatspace.