Audience sizes that would be impressive for a network or even a rival streamer might not be big enough for Netflix, and even fan outcry after cancellation often doesn’t result in any changes.
Sense8 fans did get a movie to tie off loose ends, and Lucifer was rescued after being cancelled for the second time, but those are exceptions rather than rules.
It’s also worth noting that Netflix’s mega-hits are actually fairly few and far between, and the ongoing search for the next Stranger Things may mean a lot of new shows being given one shot to sink or swim.