You're as bad as that Tenacious D guy, Sony are far from "The brink of bankruptcy".
Also you do realise resolution doesn't affect file size, right? Nobody knows what bitrate will be needed for 4k with HEVC because the spec isn't finished but even if they need double, 80Mbps, a 100GB disc would be enough. But given that HEVC is reported to be twice as efficient as H.264 that might even be too high. We'll see.
Personally I don't give a damn about 4k but clearly Sony are pushing it.
Resolution doesnt affect file size? I never heard of that. I just did a rudimentary test, I saved a blank 1080 image on MS paint and a blank 4K image. As expected the 4K image's file size was 4x larger. Or are you talking about an image that is upscaled?
I remain not convinced 100 GBs will be enough for 4K, at least quality 4K. 2-2 1/2 hour 3D bluray movies steaming along at 30-35MBPs like Avatar fill up most of the 50 GBs available on a traditional dual layered BD. (Apparently Avatar uses 41.8 of 43 available GBs)
If the next generation video format only requires 2x more disc space then...I dont want it. Its not worth the upgrade to me.
File size progression through the digital formats
480P .3 MP, needed 4-9 GBs (DVD) for movies
1080p 2 MP (6.5x .3 MP), needed 30-50 GBs (bluray) for movies (roughly 6x more space needed)
4K 8 MP (4x 1080Ps 2 MP) estimated 4x more space needed, or 200 GBs based on transition from DVD to bluray
No doubt they could squeeze a 4K movie on a quad layer bluray disc, but its not tech I would go out of my way to buy. Not enough content, likely low or unimproved bit rates, reminds me alot of HD-DVD which had many movies slog along at 8-9 MBPs.
In the end it doesnt matter, the tens of millions of bluray players out there dont support 4K output. Whenever 4K players are released they will be hyper expensive and wont reach mainstream prices for at least a few years. 4K has a much, much higher chance of bombing then 1080 bluray did, and 1080p bluray is barely hanging on. DVDs still outsell bluray at a 66:33 ratio.
Not sure why Sony is pushig 4K. Maybe they want to sucker several thousand from rich videophiles who have money to literally burn? As a projector enthusiast I can see the format really helping that medium, but not so much for pretty much anything else for a very long time.