I mean why not. Didn't Dark Souls 1&2 benefit from steam sales?
Yeah, absolutely there is a lot of life for
DS1 on Steam, if the forum is anything to go by.
The larger point is that From Software is not Square-Enix, by which I mean S-E appears to be more mired in its existing structure than a smaller company with less history of hits, like From, which is still trying new stuff.
Even with S-E's purchase (founding? funding?) of Shin-Ra, the cloud gaming service, I'll bet many ¥ens that it is not going to have any integration with
FF, ever. If I had to guess, and this is PURELY a guess, the western studio S-E owns, Crystal Dynamics, the Montreal (or is it Toronto) studio, will be using Shin-Ra before Tokyo.