After rapid releases of new fighting game iterations, the genre died down quite a bit in the 2000s. Capcom, having released umpteen Street Fighter games in the 90s, had to wait until the market was more receptive with the release of Street Fighter 4, nearly a decade later.
Apparently, the company hasn't learned its lesson. After releasing Super Street Fighter 2 Turbo HD Remix, Street Fighter 3: 3rd Strike Online Edition, Marvel vs. Capcom Origins, Darkstalkers Resurrection, etc., it appears that interest in HD revivals of fighting classics is waning.
Capcom's Christian Svensson admitted that "we've probably run the course of feasible titles" for any fighting game revivals. Noting a "dropoff" in sales with every game that gets introduced, Svensson said that the "novelty of such projects is wearing off." Speaking on the Capcom-Unity forums (via Siliconera), he admits that "we have been quite prolific in these areas and it's probably time for us to slow down anyway."
While fighting development may have slowed down, Capcom's not done dipping into the HD remaster pool yet. The company's upcoming remake of DuckTales is hotly anticipated, proving that fans of other genres need to be serviced as well.