This isn't even the worst outcome. There are hundreds of video games that are never re-released at all and have never been available for sale digitally, entirely because of soundtrack licensing.
I believe the only place you can watch them as originally produced is iPlayer, but at least the BBC has copies somewhere.
In the end the situation around sound track licensing in different media seems so counter productive to even the interests of the rights holders. Essentially shows and games that incorporate songs are free advertisements for those songs and in no way compete with direct sales / streaming of that music on its own.