Ask HN: Room for innovation in retail niches?

Any fat man knows what I'm talking about. We've got three options: Custom tailor, casual male xl, or rochester big & tall. Our clothing options begin at 2-3x the cost of a non-fat guy's equivalent .. For 20-30% more fabric, and the same amount of effort.

Camera stores are another one. If you've tried to buy a hot camera in the past year, like the Canon 5D Mark 2, or the 1D Mark V, then you know what it's like. The smaller shops tend to have some in stock when Amazon and the 2-3 larger players are empty.. But so many of the smaller shops are playing some pretty awful bait and switch games.

It seems that there must be a better way for both of these niches, and others.