Baby hackers that want go working for NSO want to have a high life. Modern high life requires modern communications devices. Blocking them from modern life (for example, vaccine passports done via iPhone and Android) will quickly lower the ranks.
Blocking Israeli government officials from Google and Apple will immediately solve NSO is an Israeli company that is cozy with the government and gets government protection problem.
None of the NSO group's clients would want to pay for it via suitcases of cash. And in either event paying with suitcases of cash creates problems in the modern world for those that receive the suitcases of cash.
there is a wide range of exploit brokers and a decent number of security researchers that choose $ over morality as long as there is demand there will be supply.
Blocking Israeli government officials from Google and Apple will immediately solve NSO is an Israeli company that is cozy with the government and gets government protection problem.
None of the NSO group's clients would want to pay for it via suitcases of cash. And in either event paying with suitcases of cash creates problems in the modern world for those that receive the suitcases of cash.