Comment by srmarm
That's exactly how it usually happens in my experience. I think a lot of people are OK if everyones upright on short haul flights (here most budget airlines don't have a recline facility and it's not missed) but once someone reclines into your space you then recline to gain a little space back and the domino effect takes place even if you're not sleeping.
And then the person in the last row is screwed because they are in a seat that doesn't recline but the seat in front of them does, so they have to sit like a canned sardine for the entire flight(ask me how I know).