Not higher than having to perpetually secure a network by computation; which taken to the extreme is essentially a sure-footed destination to causing a black hole by argument of having to use all available space for computational security and incentives.
That is how it works, precisely. You secure the network with compute. A computer requires physical space to run a computation. Thus maximizes towards using all physical space for incentives driven by network security.
Are you telling me that there is not already physical evidence for such? I assure you there is plenty of evidence for physical space being assimilated by the incentive structures related to bitcoin and its progency.
Taken across time to a civilization that grows into further complexity, there exists a limit into how much space can be used to secure the network, and most likely even incentivizes maximizing capture of space for computational security therefore it accelerates our civilization towards creating a black hole. I couldn't come up with a better way to fast-track our way towards a cosmic environmental disaster. It's a pretty bad incentive structure long-term.
Are you technically competent? Have you read the whitepaper? It’s the fundamental theory of the paper. I am not sure how I can describe it better than the whitepaper itself, which necessarily depends on its substrate which is a substratum which provides compute which necessarily implies a concrete material in physicality. Thus, physical material acts as the mechanism for computation, which Bitcoin depends on for network security, incentivized by the value of the distributed nature of the network thus requiring an ever greater need for compute.
Even in a world where computation doesn’t become more efficient it still takes up the total space available eventually due to the incentives of protecting against network failure.