In response, the accused argue that they had little choice.
"Many people around the world tell me that we've handled our problems in an incorrect manner but no one tells me what we should have done," John Kennedy, the head of the industry's trade body IFPI, told Reuters in an interview.
"Free is just impossible to compete with".
Much of the debate at the gathering on the French coast has centred around the concept of digital rights management, or DRM, which can restrict the use of music bought online and was introduced in a bid to contain piracy.
Its supporters say DRM also offers alternative methods such as subscription or advertising-supported services as the music cannot then be offered onto peer-to-peer networks.
But one result of DRM is that tracks bought legally from websites such as Rhapsody cannot be used on the market-leading iPod as they are not compatible, potentially restricting the growth of legal sales.
"DRM is like polonium to some people," Kennedy said. "Digital rights management is exactly that, it's the management of digital rights and if we weren't managing it the headlines would be 'irresponsible music industry ... creates anarchy.'"
INDUSTRY CRITICS
But not everyone agrees.
David Pakman is chief executive of eMusic, the second biggest service after iTunes in the US market, and an ardent critic of DRM.
His service is the only one on a large scale delivering tracks in the MP3 format, meaning they can be played on any portable music player, including the iPod.
That stance however has resulted in none of the four major labels, who are responsible for around two thirds of the world's music, supplying to the service.
"It's the same model that was used for the CD and DVD, universal compatibility, and we think it's the principal thing holding back the growth of digital today," he told Reuters.
Chris Anderson, the editor in chief of Wired magazine, argues that some form of piracy should simply be accepted.
"You cannot have zero piracy and if you try to get to zero piracy you will make the experience of consuming music so painful you'll have zero industry."
Among the many music executives discussing the alternatives at Cannes was Terry McBride, the chief executive of Canada's Nettwerk Music Group which manages such acts as Avril Lavigne.
Among McBride's many ideas was the plan to tap into the peer to peer market where fans could recommend a track, and receive a small percentage of the sales if the track was purchased.
"We are now entering the era where the socialization of the internet is happening," he told Reuters. "Why not truly harness the power of peer to peer."
But despite the many issues created by digital, the industry is united and excited by its potential.
Barney Wragg, the head of digital for EMI Music
