Add to that that the Sydney Opera House is absolutely horrific as a venue.[0]
After ousting Jorn Utzon[1] they tried to finish it on the cheap and running roughshod over the original plans they wound up with a totally iconic building (from the outside) and a terrible theatre and concert venue on the inside.
I haven't seen the Elb Philharmonie. But from what I heard it must be a fantastic venue in every respect.