Its subjective, and full of nuance, but I do feel that Netflix has its own style that is very different to HBO's style. Consider the witcher vs game of thrones or black mirror pre-netflix vs post netflix. Its not black and white though, as Netflix animations (Castlevania, Pluto etc.) are amazing TV, but personally I would much rather watch a HBO show than a Netflix one - especially if its a fantasy/science fiction one where Netflix's style isn't one I find appealing.