Well, first off, it's highly unlikely to begin with. And it's a bad idea mostly because Japanese games + PC = ....... no. Falcom is probably the only developer that embraces PC but has been moving towards handhelds/consoles lately.
Dark Souls was a great port. It played exactly like the PS3 version, even down to some of the glitches in the PS3 version. Was GFWL a bad move? yes. Could they have upped the resolution and enhanced the game to take advantage of PC? yes. but as a port, it was great.
Also, any game that is in the top 10 on steam is not selling 10K. Not with a digital distribution system that controls more than 70 percent market share and has millions of registered users. It must have sold at least 100K and continues to sell. That's nothing to sneeze about.
It's too bad some of you can't really see the utility of having this game widely distributed on other platforms. PC is the logical next step. PC gaming is, after all, the future.
First of all, Dark Souls was initially released on both PS3 & 360. The port to Windows PC is not as difficult coming off the 360 since both are made by Microsoft. There are similarities in the OS's, particularly if you factor in Windows 8. PS3 on the other hand is a different beast with different hardware and a different OS. Porting a PS3 game to a Windows PC would be more difficult and time consuming because of the more complicated platform they are puting it on.
The fact is, most JRPG fans play on the console, not the PC, so the market would not be there to make it worth while. Also, their primary market is Japan, where most gamers are on PS3, making a PC port pointless for them. They've already hit their primary market. The PC market just isn't worth it.