While I don't disagree with the overall premise, Rishi Sunak has only been an MP since 2015 and this scandal has been going since 1999 so I am not sure the relationships you present:
Rishi Sunak -> Wife (Met 2004, Married 2009) -> Father -> InfoSys -> Fujitsu
Add up to any proof or even suggestion of corruption - just rich people know other rich people.