The fine you're proposing would cause a much larger hit to market cap than you're suggesting. Consider, Apple made ~20 billion in profit last quarter, your hypothetical fine would be a precipitous hit to profit margin which, when reported on the quarterly earnings call, would cause an abrupt downturn in share price. Consider the 13% hair cut earlier this year when the market thought Apple was going to miss. Then there's the existential panic of "does this mean Apple is in for more such fines?".