Andrew

Anything that relies on future purchases to maintain a service for current users is pretty much a Ponzi scheme. This doesn't just happen with films, although it's an obvious one, it also happens much more frequently with online games. As soon as sales of products decline beyond the point of profitability, the service is stopped.

At the end of the day, digital products will always be at the mercy of corporate decisions.

"you may need a screen as large as 75 inches or more to tell the difference [of 8k] versus 4K."

One thing I rarely see mentioned is that the viewing distance has the biggest effect on required screen size and resolution. If you're sitting 10 feet away then you'll probably need a 75" television just to be able to see the difference between 4k and 1080p (I'm guessing with average eyesight) let alone getting 8k involved.

If you're looking to buy a new television, I would strongly suggest checking a few online resources covering the relationship between distance, size and resolution before doing so.