I am not sure I understand why this is a win for Uber drivers(genuine question). Is it considered a win because now they are treated as employees, so they will have benefits like sick pay, vacation days etc? What was the policy when they were not employees? Would they be penalized(financially) if they took a sick day? France already mandates some of these for contractors, so not a huge benefit, I think.
I doubt it'll mean more earnings, since employees are generally paid lower than contractors. This being in France, universal health care already covers everyone, so don't think that drivers are going to get a better healthcare coverage.
Maybe now the drivers will have to be compensated for wear and tear of their vehicle, which I can see is a win.