You probably know a lot more than me but my understanding is there have been two previous Jewish states in the Levant, the ancient Kingdom of Israel ruled by King David and then the Hasmonean dynasty during the Second Temple period.

Both of those states lasted for around 80 years before collapsing. My (probably worthless) 2c is there's nothing magical or surprising about that, a lot of people have pointed out that political entities often last around the length of a human life before change occurs.

The most prominent current theory is the Strauss–Howe "fourth turning" one but the idea goes back further than that