"Founders retaining control after a series A is clearly heard-of. And barring financial catastrophe, I think in the coming year it will become the norm." Would

"Founders retaining control after a series A is clearly heard-of. And barring financial catastrophe, I think in the coming year it will become the norm." Would a financial catastrophe simply stop new series A rounds, or would it rather change their terms? Are there any examples of changes related to the adventures in 2007--2008?