Even in the final years of his life, Rupert Murdoch puts his far-right political agenda above everything else. The 93-year-old mogul forfeited his relationship with three of his children to ensure that Lachlan had complete control of his media empire. Murdoch-controlled Fox News and the Wall Street Journal have raked in cash by pushing right-wing propaganda, and the elder Murdoch doesn't want to risk his sacred cash cow, even if it means losing his own children.
Rupert Murdoch spent his entire life building up the empire we see today, and he has every right to ensure that his legacy continues. Fox News and other Murdoch companies have become the leading outlets of conservative media, and maintaining a right-leaning editorial position is wise both financially and ethically. Lachlan Murdoch is the only heir who can continue his father's vision, and his siblings aren't entitled to subvert Rupert's wishes for his empire.