Historically, the BBC are very conversative in their music output. From the mid-50s to the arrival of the Beatles they tried to ignore rock music; eventually, they were shamed into creating Radio One. They almost totally ignored the folk boom of the 60s/70s. I reckon that around 1970, over 200,000 folkies a week were attending folk clubs in the UK. Far more than ever attended classical music events. The tremendous world-wide interest in Irish folk music that followed in the wake of Riverdance seemed to pass the BBC by. I'm afraid attitudes haven't changed much at the BBC in over 60 years!