These discs are proof that there is a market for "despecialized" editions of Star Wars. Even though they are awful transfers of the not quite original cut, they are now highly collectible and sell for almost $100 for some used DVDs. A real 4k or at least Blu Ray release would sell very very well.
There is a site that lets you get fan restorations of 35mm Star Wars releases. I don't know if it's quite piracy since they never received a cease and desist for Lucasfilm, but I think it's kind of borderline, so I won't be posting any links here. If interested, feel free to Google for it though - it's quit interesting. They have a full 4k restoration of a 35mm print that cost them over $10,000 to produce.