A progressive tax on revenue should be levied in an ideal world. But the bottom rate shouldn't start at the first <currency_unit> earned.
Without thinking too much about it, a 0.1% rate on revenue over 500 million would be a good starting point, rising to 10% on revenues over 10 billion. That would hit the largest companies the most while leaving small to medium businesses largely unaffected.
A severe restriction on the amount of money that can be transferred to a sister company for "licensing" wouldn't be a bad thing either. (Either that or make that taxable somehow.)
Good luck ever getting any of that passed into law though.
Biting the hand that feeds IT
