A tourer is a common sense bike, but it's a hard sell because it's not sexy like Froomey's carbon dream machine.
Then there's the Thorn factor, they are not to everyone's taste, especially the handlebars on a lolly stick.
Then there's the size, this one looks to be a small, which is only marginally less popular than a large, which you often can't give away.
Twenty six inch wheels are also looking increasingly dated.
None of the above would bother an experienced cyclist (of the right size), but those factors do limit the bike's general marketability.