England management creates a culture where they encourage players to make their own decisions and act that professional sportsman and adults.
Players abuse that trust repeatedly, despite management meetings asking them to reign it in. Curfews and heavy handed parental control is considered counter productive to getting the best out of players on long tours. Therefore striking a balance is vital. To do so you need to trust your players to act as responsible, professional adults.
I'm sorry, this is on the players. They are the ones at fault. They are not learning or not listening or not caring. Ironic that KP calls for Strauss to sort the shambles out when he was pushing back against Flower's heavy handed management a few years ago.
Strauss has a role to play here, but I'd guess he doesn't want to be the guy to install curfews, alcohol bans and over bearing restrictions on player's down time. It affects performance. He's being backed into a corner by Stokes, Hales, Duckett - I'm not convinced its his fault...