The thing is, that Kafka's work is more like a private diary and wasn't meant to be published at all and he specifically stated that afaik.Times are a bit different for creators today. Although I don't know life of Kafka, I'll use some more local example. By the end of XIX century a poet C.K. Norwid died. He wanted his works and notes to be destroyed (and in fact a part was). Today his poems are published. Fortunately in unchanged form.
Let's imagine thar mr. Norwid died in the beginning of 21th century, not ending of 19th. So first, there would be a small court battle between companies. Finally, the one which paid the biggest cash would hire copywriters, finish works from notes, make derivatives and place ads in as many places as possible before publishing.
In this perspective the steam roller looks to be the better idea.