Who knows, we might see this protection but not in near future, but mostly embedded in Operating Sytem and/or commercial burning programs. So the good people that make freeware will help us, I hope.
The DVD is mature format with the exception of some minor copy protection schemes like the Arccos, so we will not see many new tricks here, especially that there is very large base of standalone players they cannot ignore. But the new format like Blu-Ray and HD-DVD might have tricks from the start, it is always easier to implement.
Are you familiiar with Divx? no, not Divx; hehehe
The first Divx was an attempt to make a standalone DIVX player by CircuitCity and some law office in Los Angeles, this is similar to DVD, but not same. You actually buy a Divx movie at lower price, similar to renting, but before you use it the standalone player is connected to the phone line and gets permission to play. After 1 or 2 days you cannot play it anymore unless you either re-rent it or buy it with credit card.
Needless to say, this was not popluar, and had early death.