Was Yitzchok's Bracha to Yakov ever fulfilled?

 

PARSHAS HASHAVUA - TOLDOS

                

When was Yitzchok's Bracha fulfilled?           ברכת יצחק 1) ויתן לך -ורב דגן ותירש 2) -וישתחוו לך לאמים-הוה גביר לאחיך- 3) ארריך ארור ומברכיך ברוך The בעל הטורים writes that the ברכות יצחק took effect from the times of דוד המלך and lasted until יהורם  (six generations) It might seem an insignificant ברכה that  lasted only approximately 150 years out of approximately 3600 years. (4% of the total time since the Bracha was given) Perhaps it was well worth it for Rivka & Yakov to take the risk of acquiring this ברכה that only lasted for about 150 years because in those 150 years the בית המקדש was built and מלכות בית דוד משיחו was established.  These two important events in our history might have been able to happen only because of Yitzchok's Bracha. These events enabled us to survive the גלות by yearning for 2000 years to ותחזינה עינינו בשובך לציון and to ובא לציון גואל אמבצי