While it's a gross simplification, it is still interesting to think that 200-300 million is the price tag that the French government is willing to put on it's future generations of CEOs and successful companies, which is disappointing to say the least.
And like many others have stated, this may just be for political points. I would bet a large group of this demographic has no problem deferring salary for the next two years (thought it will be interesting to see if the tax is extended).