Rabbi Ovadia Yosef once complained that the plaques of Ashkenazi yeshivas bear names of Sefardi patrons, whereas Sefardi yeshivas show no evidence of Ashkenazi benefactors.
While certainly true that the Sefardi world has fattened the Ashkenazi yeshivas, far more than the other way around, I don’t believe this to be a fair example of the phenomenon. Rabbi Ovadiah himself studied at Talmud Torah Bnei Tziyon which was founded and funded by Moshe Porush. And there are other examples, too, especially farther back in history.
And excuse the question, but how many Sefardi yeshivas are/were there, anyway in comparison?