Ultraviolet, in addition to being the most consumer-unfriendly service mankind has yet dreamed up, requires online authorization, so there goes that idea. I **never** buy DVDs that only offer Ultraviolet digital copies.
From someone that owns and purchases movies from at least a half dozen different services, your continued attempt at putting down ultraviolet and at the same time lauding iTunes is just mind boggling.
While ultraviolet is going to require "authorization" in order to stream or download the movies you own... that's no different than iTunes requiring authorization (signing in with your Apple ID) in order to stream or download the movies you own either.
Just as with iTunes, after downloading, I can play and watch any of my couple of hundred ultraviolet movies via the Vudu app (my personally preferred app) without an internet connection (read, no further authorization).
Where watching movies purchased via iTunes requires you to use iTunes, there are half a dozen different services available to watch ultraviolet movies.
Where watching movies purchased via iTunes requires either an "Apple" device or a Windows computer with iTunes installed, I can stream &/or download and watch my ultraviolet content via a Mac, Windows, iDevice, Android, Roku, PS3, PS4, Xbox, practically any DVD or Blu-Ray player on the market today as well as Smart TVs.
Those owning content from iTunes and want to watch their purchased video content on their phone or tablet, there is one option - an Apple device - you are effectively "locked" in.
Those owning content via Uvvu have the option of Apple, Android or Windows devices.
Where watching iTunes content requires the device to be authorized by the single account (password/username) used to purchase the movie/TV show, ultraviolet permits you to set up to 5 other family members with their own individual logins to watch that content.
Whether using iTunes, Amazon or any of the half dozen ultraviolet services, every single one of them requires that either the device or the app being used to watch your downloaded content be "authorized". You can't just move iTunes content to another computer and expect to watch it without first "authorizing" that machine.
While the picture with ultraviolet may not be all rosy, If you want to continually eschew it, you should be showing the exact same contempt for iTunes and every other service that permits streaming and downloading of digital movie/TV content that is available today. There is not a single "legal" service today that permits you to view your purchased digital content on any device you elect to use that does not require that new device (or an app on that device) to be authorized.
(Also, many Blu-Rays that have Ultraviolet logo on the packaging, actually have codes for both uvvu and iTunes inside the box. At least on the Blu-Rays I've purchased, this has become more common than not.)