Could be one of two things…
2.1 was pitched as a hardened implementation, and one that it would not be cracked…or at least not cracked for awhile.
This is just an initial implementation. Something new players will need to support, but with no real value right now. However, once 2.2, 2.3, 3.0, etc… come along (which are harder to crack), captures may be the only option. It may also ensure player manufactures are held accountable to enforce strict(er) HDCP, or risk some sort of penalty.