Of course. But they will still be about a hundred times smaller than they are today. Today, someone thinks of an idea, patents it and estimates its worth at $1

Of course. But they will still be about a hundred times smaller than they are today. Today, someone thinks of an idea, patents it and estimates its worth at $100M. Someone else develops the same idea and assigns a value of $20K. That's the error bar TODAY. Inventor has no incentive for realistic estimate - they will always overestimate (no penalty for that). An infringer has no incentive for a realistic estimate (no additional penalty for that if he loses in court). An ip tax will decrease the error bars by forcing the patent owner to pay for overestimates.