Well... Games are such a pain to support or port exactly because of the nature of development. For most games post-release life cycle is supershort, i.e. nobody

Well... Games are such a pain to support or port exactly because of the nature of development. For most games post-release life cycle is supershort, i.e. nobody cares about long-term polishing, bug-fixing, proper platform support. This is why Proton/Wine are such a massive undertaking.