I know most Blu-rays are roughly, on average, about 30GB each. I've never digitized a 4K Blu-ray before, but Google is telling me they're roughly 100GB each.
Quick estimate of my collection, I have around 115 4K Blu-rays and 230 Blu-rays (not going to factor in DVDs).
115 x 100GB = 11,500GB
230 x 30GB = 6,900GB
11,500GB + 6,900GB = 18400GB
18,400GB = 18.4TB
So I would need a 20TB drive *just* for my current collection, with barely any room to grow, and no room for bonus features, only room for the uncompressed movies themselves.
But let's say I went ahead and bought two 20TB drives and paired them, at roughly $500 each (on the cheap side). That's $1K for the server alone + the time it would take to digitize roughly 350 movies (again, with no bonus features). And as I understand it, it would be best if the server were basically an entirely different computer essentially, since whatever server Plex is paired with needs to always be on, and always connected to a WiFi source, correct? So that's likely a bit more dough as well for that whole setup.
I don't know, it just seems like a lot of time, effort, and $$$ to have a truly digitized, uncompressed library, not dependent on any other studio, cloud, or platform. I totally get the appeal, it just doesn't seem worth the massive headache, and feels like a million little things could go wrong in the process.