This article is not too far off the mark. Akiba has gone downhill in the past decade. The mass-market retailers have big stores in many other areas and so there is little reason to go to Akiba unless you are building your own PC, need some obscure parts, or maybe something that is not commonly sold elsewhere (region-free DVD players and non-domestic electronics, for example.)
Akihabara becomes geek sex paradise [Japantoday.com]