I think it is still to early to tell since most of the games are held by last gen versions as well. But for 1080p30fps or 60fps Series S certainly should be viable for the whole gen. Not for me as I want the best bang for buck and visuals I can reasonably get, but certainly there is market for Series S.
But it is a great initiative to make a list and track how they compare.
duduspace11 "Well, since we are estimating costs, Pokemon Red/Blue did cost Nintendo about $50m to make back in 1996"
Mr Puggsly: "Hehe, I said good profit. You said big profit. Frankly, not losing money is what I meant by good. Don't get hung up on semantics"
Azzanation: "PS5 wouldn't sold out at launch without scalpers."