Now we're getting into silly semantics, but many of those titles including Game of Thrones are just as often either categorized under either low fantasy or dark fantasy because of the downplaying of magic and fantasy over more realistic politics and means of conflict. Dark Tower is even listed as one of the examples of Dark Fantasy works on wikipedia and under low fantasy you'll find:Hawki said:Actually, the only non-high fantasy series I listed are Harry Potter and Percy Jackson. That's 2 out of 9.
And like I said, high fantasy is fringe, so there is that. Every so often we get high fantasy that enters the public conciousness (Lord of the Rings, Game of Thrones, probably the Chronicles of Narnia), but they're the exceptions to the rule.
'The early 21st century is seeing an increase in prominence of the work of authors such as George R. R. Martin and Joe Abercrombie, whose high fantasy novels (works set entirely in fantasy worlds) have been referred to as "low fantasy" because they de-emphasize some typical "high fantasy" elements such as magic and non-human races in favor of a more gritty portrayal of human conflict. Fantasy writer David Chandler considered this "rise of 'Low Fantasy'" to reflect the contemporary reality of the War on Terror?characterized by "secret deals", "vicious reprisals" and "sudden acts of terrifying carnage"?much as the horror genre reacted to the Vietnam War a generation earlier.[6]'
But again, now we're entering into the very silly world of categorizing fantasy genres. For my own part I don't generally consider many of those high fantasy for the reasons listed above.