Well more concerning is that source code is never ever released for most games even when they are not sold anywhere anymore. Being able to run a proprietary piece of software is one thing, but being able to check how it was implemented would be more interesting at way many more levels. But gamedevs have no interest in preserving anything, they like it disposable.
That's not fair to the devs. Plenty of devs would love to share their code but the companies they develop for prevent them from doing so for obvious reasons.
Indies dont release their source code either so I dont think there is any proof that they care, since they dont even do it when they only work for themselves.