Not their job
> Police are powerless to stop ... criminals from hacking
Although the way the police work, it's rare for them to jump in during the commission of a crime and stop it. Historically, the police have always been a force that acts after a crime: both to catch the baddies (if possible) but mostly to act as a deterrent to prevent further crimes being committed. More recently they have acted as both advice-givers to help citizens enable themselves to not become victims of crime and most recently they have been used as a salve to reduce the fear of crime - rather than crimes themselves (although recent figures suggest that crime rates are at their lowest for 30 year, for what that's worth) so it looks like something's happened.
For more "modern" crimes against companies, organisations like the Serious Fraud Office have been set up - although their success rate is amazingly low, the cost of their prosecutions is amazingly high and the time it all takes is amazingly long. It appears that we need an SFO for cyber-crime, but preferably one that is actually able to be effective: both in catching the baddies and deterring the noobies.
Although before any crime-fighters can start to take action, we need a decent set of laws and some judicial precedents setting out what is OK and what is actually a little bit naughty.