Most people who fear death have probably already factored that by not engaging in it given it's an inherently dangerous profession by nature. Pirates are getting killed as we speak; that hasn't deterred it.
Also, patrolling for pirates is very difficult given the nature of the ocean. It's one reason, for example, that the convoy system worked so well in both World Wars. When ships are brought together in packs, it actually made them harder to find and spot by the enemy given the vastness of the ocean. It also made the ships easier to protect. A convoy system for these areas might be one defensive solution in that regard if they can be organized effectively. It's also wise that shipping crews are starting to take stronger security measures on their own ships. The bigger issue, however, is how to end piracy, and such ideas will take more than just that IMO.