Formula One Group has more than doubled revenue over past decade . Ecclestone has said himself that 10 teams would be OK . Over $ 1.5 billion was raised in 2011 with revenues expected to rise further . Fees charged to promoters of the races and TV rights money has been key to rapid growth . Top teams ( Ferrari , McLaren and Red Bull ) in good financial shape but smaller teams struggling .
Formula One Group has more than doubled revenue over past decade . Over $ 1.5 billion was raised in 2011 with revenues expected to rise further . Fees charged to promoters of the races and TV rights money has been key to rapid growth . Top teams ( Ferrari , McLaren and Red Bull ) in good financial shape but smaller teams struggling .