The stated goal is "to promote the progress of science and useful arts". Protecting an established business model via copyright was merely a means to that end,

The stated goal is "to promote the progress of science and useful arts". Protecting an established business model via copyright was merely a means to that end, not the end in itself. In this case, diffusion models are actually a perfect example of "the progress of science and useful arts". The law should be structured in such a way as to promote such progress, not hinder it.