IMO, not yet. After 100Mb/s or 1Gb/s bandwidth is a standard, then we will see transition from physical media to digital media. E.g. Quantum of Solace in 1080p weights ~9GB and download time of that with 2Mb/s bandwidth (which is a standard for average consumer) is 10 hours*. That's not comfortable time to wait to see a movie... I think in 2012 transition will start (some movies only offered on net) and 2015 at the earliest, ~80% of physical will be digital only. Of course this is just my guess and opinion
*
9GB = 9 000 000KB
2Mb/s = 250KB/s (2 000:8=250)
9x10⁶ : 250 = 36 000 (seconds)
36 000 : 60 = 600 (minutes)
600 : 60 = 10 (hours)
That's theoretical maximum download speed, real world speed depends on configuration. Let me know if something ain't right