Thanks, Henk. I've managed to find the Kindle edition of the book, and here is an extended quotation:
"Associated with EMI, for example, were a number of technically gifted aesthetic perfectionists with relatively limited musical ambition which matched fairly precisely the tastes of those recording them and selling the results. Italian conductor Carlo Maria Giulini, a case in point, became a 'star conductor' in the early 1960s, making an incandescent recording of the Verdi Requiem in 1964 - which is still commercially available - and a small number of other relatively commercially successful recordings, which represented his entire conducting repertoire; he seemed to know very little music, or about music, apart from these few dozen pieces. No producer seems to have tried to tried to persuade him into a more adventurous modus operandi, despite the ready audience for his recordings."
Andrew Blake, the writer of the above doesn't name his source, but from what I know about Giulini, I would say that the above assessment is inaccurate, to say the least, not to mention condescending. And, as I suspected, there's an ideological axe to grind. Here's the beginning of Blake's essay:
""Who is that black man over there?" asked, predictably enough, the Austrian conductor Herbert von Karajan, during a rehearsal for an early 1960s recording session. In assessing the career of the 'black man' in
question, Suvi Raj Grubb (who became producer Walter Legge's assistant at EMI in 1960, and arguably EMI's most important classical music producer in the 20 years after Legge's resignation from the company in 1964), this preliminary exploration will discuss his importance to the evolution of the common values of classical music as encoded in commercial stereo recordings; but Karajan's question still invites a nuanced answer, and the chapter will also, necessarily, if very tentatively, begin to map race/ethnicity and empire onto the sonic values expressed by classical music, which is still among the most important registers of musical whiteness."