I agree. But I don't know what the solution is here. I suspect that making certain classic games available on modern hardware isn't always a trivial matter, and it may not become as trivial as it should be until something like Google Stadia (or equivalent streaming service) is the norm.
In any case, there are a bunch of old games I still want to play but just can't access (or can't access easily). Very frustrating, as many of these games still have enormous gameplay value today.