I agree about the difficult this poses. Given the kind of wide range of Android devices, simple content protection might not really be possible. Verifying a device as Android doesn't really tell you much about the kind of hardware that it is running on, so for business types this kind of uncertainty makes them unwilling to try alternatives.
Big Content will not really care about Android until it is easy enough and/or profitable enough to service. Given that Android doesn't have an easy way to implement DRM schemes right now, it is unlikely that many companies will be rushing forward to work on Android until some easier solutions are available.