not necessarily - having 6Mbps/1Mbps Internet connectivity should give better than what they have today. Its logically separated, so you wouldn't even notice the 18 Mbps that the TV is using, just as you don't notice the data being consumed by your TV/digital phone when using a cablemodem.
Its logically separated, so you wouldn't even notice the 18 Mbps that the TV is using, just as you don't notice the data being consumed by your TV/digital phone when using a cablemodem.
You cannot compare IPTV with existing Cable or Verizon's FIOS. Most TV delivery schemes in use today operate in separate domains so you are correct the do not affect each other.
IPTV is different. TV channels are treated as just another IP stream. As such they consume channel capacity reducing what is left for non TV data.