Companies don't care which product they sell. What customers want is automatically interesting. They care about production costs (Which are perhaps 1$ more for the BluRay disc?) and how much they can get from customers in total. If people have BluRay players and they can make more money selling the discs cheaply (because more people buy the cheaper one) they will sell them BluRay discs. At the moment they obviously still try to milk the early adopters. But the more players are sold, the smaller the price difference will be. Companies will sell you BluRay discs, DVD, tapes or their grandmother. It depends on what the consumers want and how much money they can make by multiplying number of sales * profit per sale.
??? A BluRay disc holds 3h video on a single layer or 6h video on a double layer disc in pixel- perfect 1080p video, with Dolby-Digital 7.1 sound. What quantum leap are you talking about? That's the end, there is no need for something "better", unless someone sells millions of stereoscopic 3D 4096p displays in the next years. Which will not happen. The TVs are the limiting factor here and they will be 1080p at best for the next decade. Unless you have a cinema that's all you need. No "quantum leap" * sorry.
Downloadable content as a more convenient transportation method is another method. But that will also take time, because of technical but even more so legal problems.
* (Never understood quantum leap as an expression anyway since its possibly the smallest state change possible in the universe, ok thats off-topic)