The supermarket chains used to seem unbeatable, capturing the lion’s share of the grocery market. But for some years now they have been in crisis. In the wake of a fierce price war, retailers are resorting to increasingly aggressive commercial … Clément Bouvier, Philippe Moati, Cyril Bourdou, Rainer Münch, Silvia Bravard, Marwan Mery, Denise Klug Added on Amazon Prime 2022-03-06.