What does that even mean? Economic growth has grown consistently. Technology now makes up a large portion of our GDP when it hasn't in the past. Why attack the finance industry when you could also attack the technology industry?
There's more demand. Therefore, there's a larger supply. Simple, basic, very elementary economics.
The financial industry makes up a much larger portion of GDP growth. Artificial growth that would have contracted if it hadn't been bailed out. Demand for the financial industry has been produced by force, not through the marketplace, unlike other industries.
Your simple, basic, elementary economics don't apply when an industry is being protected by the government.
There's more demand. Therefore, there's a larger supply. Simple, basic, very elementary economics.