I’ve been listening to a really good show on this recently. It’s not as clear cut as I once thought. Yes, welfare wise these chickens are worse, but environmentally, they are much better. They eat less, poo less and the poo is contained (living indoors) so it can be burnt to create heat for the sheds in Winter, and then reused as fertiliser. When left to roam free, they poo on the fields, which then runs off and destroys river habitats (see the River Wye).
Worth a listen for those in the UK:
https://www.bbc.co.uk/sounds/play/m001stxt?partner=uk.co.bbc&origin=share-mobile
Private schools finish for summer earlier too, so those with enough money to send their kids private, also benefit from cheaper holidays.