After raking in more than a billion dollars from its contracts in Iraq, Blackwater is finally being forced to leave the country that it has terrorised for so long. But the notorious mercenary firm's departure will likely have more symbolic significance than any real impact on the day-to-day lives of Iraqis.

First, only Blackwater as a corporate entity - which just changed its name to Xe in an effort to shake its bad reputation - is being given the boot. Iraqi officials have said that its operatives will be allowed to stay in the country by switching companies, as long as they have clean records. While this sounds reasonable, making that determination will be next to impossible. According to US officials and the contractors themselves, the actual number of shootings in Iraq by private military companies is far higher than is publicly acknowledged and they are rarely reported by the individuals involved.

Second, Blackwater never was a lone bad apple. The entire mercenary industry is rotten and needs to be discarded. Consider Dyncorp and Triple Canopy, the two mercenary outfits that will be filling the hole left by Blackwater. In 1999, for example, Dyncorp employees were implicated in a sex ring in Bosnia that involved the trafficking of women and children as young as 12 years old. When whistleblowers came forward to expose these heinous crimes, they were promptly fired.

And there is no sign that firm has cleaned up its act in Iraq and Afghanistan. The US state department has repeatedly rebuked Dyncorp for being unprofessional and "too aggressive". In one embarrassing incident, a BBC correspondent actually saw a guard from the company slap the Afghan transport minister.