Since Daredevil didn’t exactly set the box office alight in 2003 20th Century Fox decided against a sequel; however they knew that if they wanted to keep the rights to the character they would need to start working on another film at some point. It’s a similar situation with X-Men, hence all the spin-offs, and Fox are already in the process of rebooting Fantastic Four in order to stop Marvel getting a chance to claim the rights back.
From Deadline Hollywood:
It’s Daredevil, the movie named after the sight-challenged hero played originally by Ben Affleck. Regency is mounting the remake with former News Corp No. 2 Peter Chernin producing. Writing the redo is screenwriter David Scarpa, who scripted The Day The Earth Stood Still for Fox, which will distribute Daredevil 2.0 or whatever it’s going to be called.
I didn’t see the film seven years ago, so I’m not that interested in this reboot. Unless, of course, Fox have learned from their mistakes and don’t screw it up again. They seem to have turned over a new leaf recently, with the hiring of Bryan Singer for X-Men: First Class and getting Oscar winning director Christopher McQuarrie to write Wolverine 2. Maybe they’ve realised it’s better to make good superhero films, instead of making any old turd and marketing the hell out of it for a big opening weekend.