You are advocating creating perverse incentives. A specific branch of government, a select agency, to become a profit center through
continuous finding and fining of ever more wrongdoings. All morally excused because the victims are faceless multinational corps.
We all know how badly that goes with speed traps and red light cameras - instead of improving, the road conditions and sometimes even local rules are tweaked to maintain steady cashflow.
Say no to revolving doors of regulators, say no to moral hazard of what effectively amounts to vice tax. Apply criminal penalties when reasonable, don't make data leaks & privacy breaches just another cost of doing business.
-edit-
Clarification: a fine works well when it's expected to be a rare penatly enacted on a singular player - as it makes that player noncompetitive in the market. Conversely, when fines are expected to apply regularly and at proportional rate to most, or all, players in a market, the fine no longer makes the player noncompetitive - it merely shifts the market. Perhaps some alternative markets (print? radio & TV?) would pick up some of the advertising slack, but largely it'd be a regular money transfer from corps to the government. And a "vice tax" like that is a clear moral hazard, with no natural end in sight.