The definition of "harmful free-riding" is not good, and its use to justify the license is problematic. > Consequently, the common pool resource may be under-produced, overused, or degraded. Additionally, it has been shown that despite evidence that people tend to be cooperative by nature (a prosocial behaviour), the presence of free-riders causes cooperation to deteriorate, perpetuating the free-rider problem.” Soft…
But latent bugs are discovered at a rate that is roughly proportional to use, and for application software running under general purpose operating systems on personal computers or servers the operating systems and hardware gets updates which can cause problems for applications.
That imposes a maintenance and repair burden if you want to keep applications working that is very similar to the burden imposed by wear and degradation when you want to eep some physical thing running.