Season 3 of a TV show comes with a significant wage increase for everyone involved, so 3 seasons (at least) is something that the sellers of a show always want, but the buyers are trying to avoid.

On Netflix, it's become a pattern of all shows only getting 1 or 2 seasons, unless they're mega-hits, or dirt-cheap to produce in the first place.

How well a show wraps up after 2 seasons often depends on how much the writers want to do the streamer's job for them. Tokyo Vice was a (rare) example of a good, self-contained, 2-season show.