Yes it is said every time, until the last time when the rules really are different - one early summer when there really will be no more war in Europe, one cold november night when the Berlin Wall just opens, one fall when a scrappy little upstart in a colony forces the worlds biggest empire to leave, one december when Ireland was free, etc.

Predictions about the future are hard.

Actually what people are constantly saying now is what you posted. It's to the point where if you suppose that everything is not an exact recurrence of the dot-com bust, you're seen as delusional. But everything can't be exactly the same as it was then.