Toshiba submitted the Triple layer 51GB HD-DVD disc format to the DVD Forum in January 2007.
The 51GB disc was approved by the DVD Forum in September 2007
HD-DVD would have had no problem with 3D, neither from capacity nor bandwidth. 3D format development had come much further on the DVD formats than BD at the time 3D became something of interest.
Originally Posted by Ron Jones
However, the original selling point to the studios and disc manufacturers was it was based on DVD disc production equipment.
This was in fact also the real reason HD-DVD lost the studio support and the war.
Because BD needed new expensive and specialised equipment for replicating discs they would have control over production by only licensing/selling BD replicator machines to some very few trusted companies.
In that way they prevented BD disc pirating.
This was the real reason behind the support for BD and not any of the technical points frequently presented in the format-war discussions.
As a format HD-DVD was a much better and more logical (and "democratic") development of optical disc than BD, which was more about corporate control and politics than technical superiority.
Had the more open HD-DVD format won, with its much lighter licensing terms and more replicators, we would have seen much more interest for further development of the format, and not locked down between some few players overseen by Sony as with the BD format.
Maybe even Apple, an original BD supporter that never has released a BD product, would have contributed.
Steve Jobs summed up BD perfectly in 2008
when he was asked about why Apple didn't have BD products;
"Blu-ray is just a bag of hurt.
It's great to watch the movies, but the licensing of the tech is so complex,
we're waiting till things settle down and Blu-ray takes off in the marketplace."
I think BD has settled down in the market place now, but still no BD products from Apple.
He later supposedly expanded on this in 2010
"He admitted that retrospectively he feels ashamed that Apple’s name is associated to Blu-ray,
as he thinks that BD supporting associations look today more like Mafia than anything else."