So... hang on...
If say overnight you kittens decide to play pretend-its-a-mouse with your BD of Prometheus you're fine, because you can still watch the STANDARD DEFINITION version online?
WTF is that. If you buy a BD you want a BD quality download, too. I'm sure most people will think of it more as a cloud movie backup thing than a library. After all, they HAVE the disc, right? I get that maybe sometime in a distant Utopian future Big Media will allow online purchases of UV-only media (when they finally move their biz model into the 3rd millennium), sure, but that would make it even MORE important to have top-quality rips available, yes?
Sounds like a load of bollocks to me compared to other options of getting 'standard definition' movies.