It is worth remembering that the socio-political actors in Marseille opposed the state/union action and supported Ryanair in this matter. Obviously they have a different agenda to the government, but it is also worth remembering that the unions in France represent a massive 8% of the total workforce ... and that is an average that includes a 15% participation amongst state/semi-state workers.
Right now, the unions (who do not represent 92% of France's workforce) are rejoicing at having forced the closure of some major retailers who had the affrontery to stay open until 10pm on weekdays and employ aspiring greedy capitalists (or what we outsiders call 'students') to do their law-breaking work for them. Ditto for daring to perturb the peace and quiet of the Lord's Day - the same Lord who must not be allowed show His face in any school or any other institution of the Sacred Secular République.
France today is riven by arguments over, and allegations of, travail dissimulé and concurrence déloyale and it may be that losing a case of this magnitude is the kind of kick up backside the country needs to join the 21st Century.
Looking at it from a different perspective, Ireland and France had a "face off" over corporation tax during the Sarkozy years and France blinked first. Ryanair are now saying publicly that, if they lose, they'll reclaim all taxes and social charges already paid to the Irish state for the workers concerned. So they'll have Joan Burton, Michael Noonan and Leo Varadkar taking a very (pro?)active interest in the outcome, while their counterparts in France are struggling to deal with their own voters.