This remark could also apply to other origins such as Poland and Hungary. Basically the great majority of famous operas have been produced over the period, even if for a small number of performances. Just a few exceptions were noticed, such as Norma, curiously absent. Besides the Russian composers highlighted above, we could point out the total absence of the Spanish School and of Rameau. French composers are there, but they do miss a towering leader such as Verdi or Mozart.
Creation is persona non grata in the Who's Who of the great opera houses of the world.