Hey 0x1, I totally understand where you are coming from. This topic has definitely come up in the past. The brown outs are 'rolling' so they happen to different rooms at different times. It's an important part of the theme in the sense that the corps do not care about Red Sector (where your character is, if they are experiencing brown outs).
And it's also important because of crime. Brownouts allow people to plot and plan to commit crimes against each other at specific times, when there is a brown out, so it's harder to call for help or be exposed for the crime they are doing.
It's an important part of our divide. However, there are places you can go to which may have special devices which 'boost' the signal. These are typical spots where people gather socially, like bars.
A few people mentioned this on here already but I think it is important to note that while we can't tell you where these places are Out of Character, because that's against the rules, if you were to ask many of us In Character, either in person or on the SIC, like.. 'Hey, where can I find a place on Red Sector that doesn't have brown outs?' then we could answer the question for ya.
Hope this helps!