Aside from the reasons posted in other replies, dont forget that if this was real life human nature would play a significant role. Since the augmentations aren't initially cheap they are going to become a status symbol, and those who can afford them will want to show them off to discern themselves from the poor, this would also gurantee there was someone to buy the neroprozine at the absurd prices.

As the tech gets cheaper you are still going to get a buffer period where the price of the drug is hyper inflated until the drug company recognises they can maintain profits by reducing the cost and expanding the market. Then the aug market rockets again because the rich want to diferentiate themselves and start buying the "natural" looking and realistic but more expensive augments.

I am pretty sure that this is going to end up with some interesting court appearances just from looking at the Information Commissioner's Office own guidelines for viewing CCTV;

Viewing of live images on monitors should usually be restricted to the operator unless the monitor displays a scene which is also in plain sight from the monitor location.

and as an example:

Example: Monitors in a hotel reception area show guests in the corridors and lifts, i.e. out of sight of the reception area. They should be turned so that they are only visible to staff, and members of the public should not be allowed access to the area where staff can view them.

and also the following on the release of footage:

Any other requests for images should be approached with care, as a wide disclosure of these may be unfair to the individuals concerned. In some limited circumstances it may be appropriate to release images to a third party, where their needs outweigh those of the individuals whose images are recorded. Example: A member of the public requests CCTV footage of a car park, which shows their car being damaged. They say they need it so that they or their insurance company can take legal action. You should consider whether their request is genuine and whether there is any risk to the safety of other people involved.

and even better on the next page concerning responsibilities and the display of signs:

Signs should: be clearly visible and readable; contain details of the organisation operating the system, the purpose for using CCTV and who to contact about the scheme (where these things are not obvious to those being monitored); and be an appropriate size depending on context, for example, whether they are viewed by pedestrians or car drivers.

Typically the one thing you do see in any public area in the UK with CCTV, is an indication that CCTV is in operation, hopefully if the guidelines are followed and the signs go up in shops and they will see some drop in customer numbers because people are not willing to accept that level of invasion of privacy.

128 kilobits per second is approx 15.6 kilobytes per second, less than a megabyte a minute, but close to 50 MB an hour. Perhaps that's what you meant? If you were listening 8 hours a day, 7 days a week you might be hitting close to 11 or 12 gig a month, but I don't see many people doing that.