It does not help that things fundamental to the new tech, even though they took real effort to develop, are now exactly those items that are now "obvious to experts in the field" and "overly broad" And then have fun trying to distinguish real fundamentals from items in the form of (existing invention "with a computer") Or whatever the hot new tech of the day is.

A good example(old enough to not matter any more) is the how the Wright brothers invented something fundamentally new, their patent was on how to control an airplane, The problem is, once you see it, it is obvious how to control an airplane. Birds do it, Why should such an simple thing be protected? But conversely. This is a discipline that took the Wrights many years of hard and meticulous work to figure out. Is it morally correct to say "No, we are not going to grant you exploitation rights to this thing you invested so much time and effort developing"?