Lord Of The Flies
People, not wanting to sound old and crusty, but if you just study the history of Facebook and do some (deep) research, you will clearly discover that this is not a company founded on good will, but like an oil company, it will do anything to make money. (It's very origins are dubious.) Just as Google got burned with their Street View feature, these companies are run by people who while very savvy, are too young to be aware of their station. Meaning, they don't know the difference between right and wrong. Microsoft, for all their flaws, are run by wiser people who probably shudder at the blatent missuse of public trust by their younger competitors or partners. (Microsoft's service was proven to be the most reliable at deleting files.)
The decade of appalling (and embarassing) voyouristic celeb culure, 'reality' TV and worse has sadly created a generation of self serving people (and politicians, in particular here in the UK) who should not be in any position of power.