The setting is 60 years in the future, right? If we allow bandwidth to follow Moore's Law (which has been pretty accurate so far for bandwidth), and use 4G Wireless as a baseline for 2012 (3.5MB/Sec - 6MB/Sec) we get a result of 3.7 PB/Sec - 6.4 PB/Sec. Which is... a lot
... My personal hard drive capacity, across all computers (and like devices) would be full in under a 1/10th of a second (if they could actually save the data at that rate).
That's for a wireless signal that's equal to something that every teenager has today. Even if we allow for 50% error range (historically it's been off by maybe 20%, so that's being really generous) we still get almost 2-3 PB/Sec of functional data transfer, from just about anywhere. The only thing that becomes an issue is noise (overpopulation, everything having a wireless signal, etc) but even reducing speed to keep purity of data (and less reduce to 1/100th of potential speed), you still have an easy 20 to 30 Terabytes a second.
So it's actually entirely possible that bandwidth is "functionally" endless, since that would let you stream Avatar (the film) level CG without delay or hiccups (and it's more then enough for full VR via cellphone).
That said, while it's totally theoretically plausible at the setting's tech level, I actually like the style of Mr Andersen's (and Aeon/Trinity's) solution, and would seriously consider going that way if I was running a Cyberpunk game (for the reasons Aeon/Trinity gives). I don't think that it's too hard to script a campaign quality so that people who want to run Shadowrun, or other CP settings, can easily switch between full immersion on the go and restricted bandwidth (per the requirements of their setting / vision of tomorrow).
Calculations, for the interested
I used 50% annualised grown (rather then 60%), which is per Nielsen's Law, rather then Moore's (since Nielsen's was written for Bandwidth). Source - http://www.useit.com/alertbox/980405.html
3.5 * (2**30) = 3758096384 MB/Sec (or 3.76PB/Sec)
6 * (2**30) = 6442450944 MB/Sec (or 6.44 PB/Sec)
Egads that got far wordier then I intended. So:
TL;DR: A simple campaign quality lets us have our preferred flavour of cake, since both perspectives are equally valid.