As has already been replied to you, you're being purposefully simplistic and ignoring what's actually being said. There's a wide range of electronics people want that are more popular than ever. Riding the whole business on any one of them is dumb (when that product crashes so does your business... its as dumb as putting all your money in one stock) but a wide range of products certainly works.
And yet look where their profits went. Straight down.
You've missed the point YET AGAIN... I don't buy *anything* at Radio Shack and haven't for a very long time. They don't sell anything relevant, and haven't for years.
If they had focused on building a modern presence in the electronics business like others have (Fry's, mentioned several times now) and done it right they could be a raging success instead of on there company deathbed.