The issue isn't simply copying backlinks, copying useless backlinks of little value is easy (hence these tools) whereas getting the ones of value is teh hard part (those that are governed by a webmasters approval for an authority site etc, try getting a edu link by using these tools for a limited value site).
If it really was a case of "copying" everything then the serps as we know would be pointless, hence why filters and controls are placed. Sure things can be copied but intrinsic link value simply cannot.