Quite simply, the big problem with comics right now is too little content for too much money.
Currently a typical mainstream title costs £1.99. (UK currency) One issue will typically give me one quarter to one sixth of a story, and will take perhaps ten to fifteen minutes to finish.
Why? Because it took five issues to get Miles Morales into the costume. Another five issues and we haven't even finished the opening story. It's entertaining but the pacing is positively glacial, and it's just not good enough to hold my interest while it takes years to parcel out the story in such tiny bits. It almost feels like a cheat to produce this in monthly comic form at all; it would read so much better as a 120 page trade paperback put out twice a year.
You see why I'm not reading many new comics these days?