A long-running dispute over licences in Belgium made headlines last week when Belgian authorities questioned one of the co-chief executives of bwin.party, the world's largest listed online gaming group.
The bwin.party case has underlined the problems faced by companies in the growing online gaming sector when they operate in countries where regulations are unclear or restrictive.
Bwin.party says it is losing 700,000 euros ($889,400) in gaming revenue each month after access to its websites was blocked in Belgium.
Executives from 12 gaming companies including bwin.party said the European Commission had failed to follow through on concerns over Belgian laws first raised in 2009.
