Upgrades in format will also go hand in hand with equipment upgrades. It took a long time to go across the board 16:9, then HD, then 1080p. To go to theater standard 2K is not much of a jump from Blu-ray but it will require new software, new TVs and this is something people will not want to do.

The better idea would be going for a 4K format/system to justify the upgrade. This is what is used in the better standard theaters and is the digital rough equivalent of a 35mm print. (Being a physical medium, film can never properly be measured for digital pixels.) Of course, this would also render every digital theater at 4K or lower obsolete. (And with the terrible presentations now, you can already get a better experience with lower resolution Blu-ray at home, and that's not even getting into sound nowadays which theatrically is godawful.)

I dislike streaming primarily because I love to have the physical copy in my hands. Books, LPs, LDs, and film itself need that physical connection. That said, my big reason for avoiding streaming besides limited bandwith is the fact that you have no control over the content. It can be mastered or released in any way with little to no regards for quality. And people eat it up! Just because it is portable does not mean it is necessarily better. Never have I been satisfied with any streaming I have purchased, with image quality being sporadic at best. Then it's usually cropped to an improper ratio, downmixed to mp3 standard or less 2.0 stereo, and then you have the joys of buffering or losing the HD feed.

Sometimes I think they should just pay people to make 720p rips of Blu-rays and rent those to consumers. It's ridiculous that you pay for such terrible quality and yet those who illegally download for free are getting the superior content.

I think and hope that there will be a physical successor to Blu-ray but that it will likely become more and more of a niche market compared to the streaming/media downloads crowd.