The Bitcoin Standard is a good book that talks about this more, but bitcoin does more than provide a (very, very useful) sound money standard, the ability for people in Cyprus 2013 for example to avoid the "haircut" etc is another one.  The ability to avoid censorship (e.g. when Stripe etc cut off Trump - at the time the president and a billionaire!) by people who want to shut down free speech etc.  If it can happen to him, it can happen to anyone.