you actually describe the News Corp structure well BR.
There are large successful parts like Sky and Fox News and other sections that bleed money like a seive.
Last night I went to a hugely boring party for his local Foxtel cable network's tenth year. His son Lachlan was there at a table with young James Packer-both hopeless and very good at loosing large sums.
Murdoch spent billions setting up his Oz cable network which is wonderful if you are into re-runs of the Jetsons and the Flintstones. It will take another 20 years to show a profit.
When Rupert goes the large superannuation institutions that have invested in News Corp will move in for the kill. The company will be broken up.
Mind you, although he's 79 his mum is 101 and still going strong.