I fail to understand how it becomes economically viable to sabotage a product like this. A third class is a form of subsidy, it will be sold at a loss. I don'

I fail to understand how it becomes economically viable to sabotage a product like this. A third class is a form of subsidy, it will be sold at a loss. I don't think having a train company decide for the date of your trip a choice. It's just that train management is expensive, so if you remove the date constraint, everything is simpler, because you can fill an entire train that will travel a certain week, instead of having to deal with the uncertainty of a train which is not entirely full. Ouigo do that in France.