That's the damning thing about it. Imagine the Marvel MCU if Disney sold the rights to Marvel to another studio who didn't care to make tentpole movies and the story never finished with the Avengers. Unless you're heavily invested in the characters, folks who were interested lose passion in it, and move on to something that has a better chance to get a full story out. Were any of the Netflix series trying to do something to that degree? It's hard to say because shows other than Daredevil were pushing through a sophomore slump to try to find an identity, but if someone was casually watching the series to see it through to it's end, they certainly won't bother now.
That's what is upsetting... This doesn't hurt Netflix, or Disney, really. This hurts existing properties elsewhere: Arrowverse, Shondaland, the Dick Wolf "Chicago" thing NBC's got. This hurts future prospects of similar "universes" because if it's not a smash hit, it's not worth pursuing.
The Defenders becomes a cautionary tale. And further ventures into TV get the same "tentpole skepticism" that movie studios push risk-taking producers and artists out onto the street over. Risk makes art. If you have to bet smaller, bet smaller, but don't stop betting.
(Rant over.)
I'll see these series to their unintended conclusions. Especially this one, because I like to think this is how Fulton Reed from the Mighty Ducks grew up after leaving childhood hockey. (And Charlie Cox really has impressed me. I didn't think much of him at the start, but he grew on me.)