Of course this is just my opinion, but I think part of the reason why the PC sports game market may be lagging in NA has to do more with these titles being very similar to what's released on consoles.
The value proposition for PC gamers is a bit different than it is for console players, though that's starting to shift some. On PC you are seeing more F2P games where the barrier to entry to play is lower, there are constantly great sales in places like Steam, and some great indie games that have typically been exclusive to PC but are now making their way to consoles also.
A sports game designed specifically for the PC audience with a lower barrier to entry might draw in a lot more people if it's in line with what they are paying to access other games. Then it's about scaling the experience based on what interests the players, which is tough to do with a fixed price point.
All that being said, it's not trivial to do something like this. So when I hear comments along the lines of not just wanting to port console titles, it's my hope that it's because companies are considering doing something like this.
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