And if they want to stop maintaining it, let them have the option of releasing it into the public domain and sending a digital copy to the library of congress or something.
You can't make a work public domain, just because one distributor is shutting down their digital library. In the first place, they don't even have the rights for this, they just resell other people's work.
Demanding for ensuring another way for accessing the work in the same or similar way is fair enough. You lose nothing, they gain nothing, fairly balanced.
True. Yet I think the idea is sound — if a publisher / rights holder refuses to put a work into print or make it available, they should not be able to keep it away from the public. Copyright is a benefit given to authors & publishers, but is too-often used to suppress works due to content or retire works that can be replaced in the catalog by more profitable offerings.
Yeah it needs to be made transitive. If you've bought a digital copy of the work from one distributor that should obligate the rightsholder to transferring the individual distribution rights (this needs to be nailed to the wall by the legislature so that distribution rights all carry this mandate by law). If they want to switch distributors then the old distributor needs to be obligated to provide a method of transferring those individual distribution rights to the new distributor. If all this is "too burdensome" (editorial note: cry harder about your profits you fucking capitalist goons) then all the parties can just make it public domain.
Yep, and if they want to end distribution altogether or start fresh and still keep copyright, they could distribute DRM free copies for some minimum time frame.
At the very least I would also accept a DRM free copy being provided to everyone who had purchased it (e.g. at least one year or so to download it), and in failure to do that it becomes public domain. Anything less and we basically just end up with the classic xkcd situation https://xkcd.com/488/
Demanding for ensuring another way for accessing the work in the same or similar way is fair enough. You lose nothing, they gain nothing, fairly balanced.