In my uninformed opinion many of these "nothing new" cases happen because the newcomer actually solved some (maybe minor) pain point in usability of the old sol

In my uninformed opinion many of these "nothing new" cases happen because the newcomer actually solved some (maybe minor) pain point in usability of the old solution. Maybe combined with some good old nostalgia. In general I agree that people should study more the past, but I do not see any point in dismissing new trends just because the do not market their full genealogy upfront.