In a free world copyright is not necessary. Think about this.
"If all people were good" is not interesting utopia.
Therefore, the only way I can read your statement is "to achieve freedom[1] you don't need copyright". Unfortunately, this is false. Software companies will just go on with contracts that resctrict more than what copyright mandates; publishers of other media will just join with similar contract.
And copyleft won't be effective any more.
Not for me, thanks. I prefer copyright -- although I agree that current copyright laws are more and more insane.
[1] we agree that freedom in this context only refers to information freedom.
/alessandro