Making unlawful business decisions shouldn't be a calculated power move for them. It should put them in a worse position than they started. Like a chess game that gets rewound all the way back to the last legal move, but it costs them a rook or queen as well for the trouble they caused.
Corporations don’t go to jail.
Assuming < 100% chance of getting caught for an unlawful behavior, you're incentivizing unlawful behavior if the downside is essentially capped at $0.
The alternative argument is that what you really want a fine to do is penalize law-infringing heavily enough that a companies' shareholders make not getting fined again high priority. In that light, you're primarily concerned about levying fines against a company's profit margin/funds they're using to invest in future growth. In which case, yeah, this fine is far too paltry to concern investors in a vacuum.
That might be up for debate. According to Google Finance [1] Alphabet received income of $18.94B in September! So the fine is 15% of ONE quarter of their income.
I don't think that is sufficient and qualifies to more like a slap on the wrist.
[1] https://www.google.com/search?q=alphabet+revenue
edit: I should have said quarter, not month. Revised, sorry for the confusion.