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I think, or I hope at least, that as technology advances they will have better ways of compressing these files so they take up less space. Ubisoft did an update recently for Rainbow Six Siege which changed how compression worked which allowed for quicker loading and reduced the amount of space needed.

For me right now, the biggest problem is how Xbox One and PS4 limit download speeds which as a result means it takes forever to download larger titles like this one. On PC at least, with decent internet speeds, you can breeze through a 50 GB install in half an hour. No matter how fast your internet is on Xbox or PS4, it's still going to take ages. One of the reasons I switched to PC gaming.