Yeah for many years the railway would let a lot of things slide even though they've had the legal right to prosecute.

Many people find out the hard way just how many legal powers the railway has (they have even more they could enforce, such as dropping litter, or playing music, or being inebriated - criminal offencs with no excuse)

The social contract of buying a ticket and behaving in return for good customer service has broken down, it's gone. It's really the entire of the UK at this point.