To play devils advocate, this isn't always true. Netflix often buy up the distribution rights to shows from one region and show them in other regions as exclusive 'Netflix Originals'. The labelled Rickey Gervais's Derek as a Netflix Original in the States despite it being produced and distributed a year earlier by Channel 4 in the U.K.
Netflix Original often means that Netflix funded the production of the show. But other times it just means they paid a bunch of money so that Netflix is the only place you can see it.