Very well then, may have just been that I was looking at older titles being given another release in SD. I never check catalog on titles which were first produced post - 1999. The data capacity being higher is an added benefit and I get that. I've got SD blu-ray releases comprised of 24 episodes on only 2-discs. That's using the full memory available compared to the same DVD release which was like 5 -6 discs.The majority of Discotek's Blu-ray releases are in HD (this is putting aside, whether the on-disc material is technically an upscale). Using loose numbers, they have around 230 Blu-ray releases, of which around 50 feature standard-definition video (link to company's catalog).
Since Blu-ray players have all but replaced DVD-only units for home video, there are benefits to using the format over DVD. As previously mentioned, Blu-ray offers more storage capacity, meaning more data on less discs with less--or no--compromises to available audio & video quality. Less discs lead to cheaper production and, ideally, lower costs for consumers. The Blu-ray standard also uses better video codecs and allows for higher bitrates than DVD. While encode quality still matters, standard definition video on Blu-ray should technically look better than the same material on DVD.
I see comments on UHD anime releases. I don't see that happening on a broad scale. As I've stated in previous posts; the idiot consumers who buy into streaming / digital downloading anime only are going to eventually put physical releases out within a short time. I don't anticipate companies like Discotek to continue releasing at the rate they are in 5-years and print numbers are already going way down on newer releases. I shoudn't have to reiterate my gripe with streaming. I don't really care if it's HD or it's cheaper. The point is, it's digital Blockbuster. Pay a rental fee to watch an OVA, movie, or series and it's "borrowed." Stop paying the rental fees (monthly/annual fees); we lock you from watching or return you videos back to digi Blockbuster (Crunchyroll, Netflix, etc). Never saw someone pop in and try to steal my physical collection for not paying rental fees and that's really what streaming subscriptions are. I get it if someone watches an oop anime on YouTube but there's a point of question I have toward those who claim to really be fans of anime and won't even bother to by more than a couple releases. Modern review sites often list the format they watched a series on and 98% lately say "digital" or streaming.
I guess my rant goes more toward -- if you really liked a retro anime movie, series, or OVA; you're likely going to rewatch...but in your own time. Therefore, if you decide not to pay streaming gatekeepers - you can always fall back on physical releases and pay once.