But video poses real challenges, as it consumes considerably more bandwidth than both voice and data, and video quality degrades substantially, often unacceptably, when network congestion interrupts or delays individual packets in traffic streams.

FORBES: Bridging The Data Deluge Gap

Those services require high-bandwidth, expensive systems and don't deliver as much revenue per bit of data as voice or Internet service.

FORBES: Qualcomm's Field Of Streams