Even before streaming, the media publishing industries have been into segmenting the world into different markets for the same product: For example: books sepa

Even before streaming, the media publishing industries have been into segmenting the world into different markets for the same product: For example: books separately published in the US and the UK, DVDs and Blu-Ray disks with region codes that prevent playing on the other region players (providing they're players which obey this flag.)