How can PRODUCTIVE PARANOIA serve as a virtue?

Jim Collins in his book Great by Choice goes ahead and explains the success recipe of 10X companies and leaders.

Productive Paranoia is one such quality that helps these companies and leaders “course correct ” and hence achieve phenomenal success.

10Xers remain productively paranoid in good times, recognizing that it’s what you do before the storm comes that matters most.  Since it’s impossible to consistently predict specific disruptive events, they systematically build buffers and shock absorbers for dealing with unexpected events.  They put in place their extra oxygen canisters long before they’re hit with a storm.

Adopted from Jim Collins’s book Great by Choice

Thus productive paranoia is a habit that needs to be practices to remain honest en-route a success journey.