Much as I hate to disappoint Petit Pierre's fans, his 'influence' is almost 0.
He is unheard of as a composer outside France, except for a certain notoreity. His music is never played.
Here in Moscow, nothing of Boulez's - except perhaps a few solo piano pieces played in student recitals? -
is performed at all.
He has become Unsung during his own lifetime.
Within France, I suppose he is guilty of having shoved everyone else aside to further his own
self-importance. That may be called a legacy, but it is far from a good one.
Nor would I call him anything better than a merely average conductor. His Janacek efforts are feeble -
he should really
stop now.
On top of all that, just how widespread and pervasive is the influence of Boulez today anyway?
I doubt it even reaches the 20-ieme arondissement, let alone the rest of France.