These cases are high profile because of the celebrity of the people charged with the offences. There may seem to be more of them because of that fact, but, sadly, there are many cases going on which are not splashed across the media. Out there are a myriad of people working to bring these people to justice, to look after them in custody and to try to rehabilitate them.
Selina, I think that it is also a fact that these 'stars' were able to perpetrate some of these acts because of their fame - people admiring them, particularly very young girls, and parents wanting their children to speak to the celebrity, get their autograph, etc. No thought would have passed through the minds of most ordinary people that the jolly personae hid anything sinister or that the motives of the celebrities was to do anything other than entertain.
They did the deed and I think they should pay the price, however old the crime.