I hear talk of a select committee investigating. Well a select committee a few years ago tried to investigate the financial dealings of the Duchy and asked many questions and were fobbed off and ignored . Nothing further was done
This is the main thrust of it - and it trickles down to the likes of the police and the BBC too.
When you ultimately put people, dynasties and corporations in charge of investigating and being accountable to themselves or to people who are very much subservient to them, you're never going to uncover anything of significance. They may admit to the odd very minor 'oversight' and then put it right - to make it look like they are being fully transparent - but in reality, they are the guards who are 'guarding' themselves.
If you're at the very top of the tree, you will never risk being bonked on the head by anything painful falling from above you.