At least, that's the perception.
There ARE indeed rules in place, but they rarely box you in completely. They provide a framework to start from and might SUGGEST a box but, in reality, the confines of your box probably look more like this...
But here's the thing: there's a lot of white space breaking through that box already. Those four sides are NOT solid. The suggested outlines aren't necessarily the exact confines that you have to follow.
The four outlines above still reference that same lines as that broken box, and still reflect that same basic box structure, but are all interpreted differently. (Note that I still imposed upon myself an additional restriction here that all the box edges had to be straight!) The box edges remain perfectly intact; I just took liberties with the spaces that were available.
"The box" is a pretty tired metaphor at this point. But regardless of whether or not it's invoked, there are rules dropped down on you all the time for every project. But none of them are ever so complete as you might find in a Schrödinger's cat experiment. The rules are just guidelines that provide a loose structure to work from. The actual implementation based on that structure always remains up to the individual.
Harry Houdini made a name for himself by proving no box was escape-proof. I've spent most of my career online finding ways to circumvent the technical roadblocks that are put in front of me. Jack Kirby repeatedly found ways to work around the storytelling restraints that were continually placed on him.