Prydian was picked up by Disney earlier this year for a full live-film adaptation. Which will be their second attempt after parts of the first two books were used to make their animated feature
The Black Cauldron in 1985.
http://variety.com/2016/film/news/chronicles-of-prydain-movie-disney-1201733058/
You are right, even after all their trying, Hollywood never quite found another successful multi-film saga after LOTR/HOB or Potter. But with the interest having shifted from big to smaller screen thanks to
Game of Thrones, I expect to see many more coming out in that format, especially with the success of
GoT along side
Outlander on STARZ,
The Shanarra Chronicles on MTV,
The Magicians on SyFy.
I mean, with the widow of Robert Jordan publicising in May this year that a new production company has got the rights to
The Wheel of Time series, I can foresee a lot of the currently untouched fantasy sagas heading towards lavish TV productions. Though in the case of
WoT they are either going to have it on the air for 20 years, or butcher it senseless to make it manageable for an audience.
Given the production values that HBO, STARZ, Netflix, Amazon etc can bring these days, I'd in fact much prefer to see larger, more expansive works adapted by them than by the film production companies. Creators seemingly are given greater liberty to be both faithful AND adapt to the faster paced visual medium. The format also allows for greater audience satisfaction in this longer format as many of the recent film adaptations have been regretfully stretched and bloated for no reason other than profit.
If companies like HBO can turn people onto fantasy with the likes of
GoT, then perhaps they can do the same for Science Fiction (I'm looking at YOU
Westworld) and then, some day, hopefully soon, someone will start tackling and realising those wonderful SciFi novels/series that film makers have been hemming and hawing about for
decades.
Hugo - Seldon, here we come