> Pascal and Ada were still significant in the early 90s (ie when Python arrived).
That is not the timeline we're talking about here. Dynamically typed languages started taking off at the turn of the millenium and really exploded in the second half of the aughts. Java didn't even exist in the early 90s.
But it's not as if the programming community collectively just forgot about these languages (and, as mentioned, Delphi and PHP are in fact contemporaries). The question remains, why did new dynamic languages rise, but already existing static languages decline? That requires an explanation.
That is not the timeline we're talking about here. Dynamically typed languages started taking off at the turn of the millenium and really exploded in the second half of the aughts. Java didn't even exist in the early 90s.