It is rumored that the game is 90-100GB.
It is also rumored that there is a 50GB patch required on Launch Day, which brings the entire thing to a 150GB worth of downloading time.
Not for nothing, but there are some people that will likely be getting this game digitally, that don’t have the worlds fastest internet (like me), and can only download 1GB in about 20 minutes. That means it will take people like me, about 30-40 hours to download the game, while not using ANY internet anywhere in the house, at all.
Since that proposition is very unlikely, Forza 7 will take MANY people 3-4 days to download, to play it for a few hours, and then need another 50GB download, where they will not be able to play the game for another day or two.
If this update cycle remains the way that the patches roll out for the game, simply put, there will be weeks of time, that you cannot play the game, because players have to update with a large file.
When I used to play Destiny a Lot, and the DLC and the major updates were 12GB-20GB, I simply could not play the game for 2 days, because it would be down for maintenance, and then go straight into requiring an update. Typically this happened immediately after the console itself needing an update.
Playing the game online requires very little bandwidth, but installing the games these days, and keeping them up to date, is very time consuming.
The ratio to game time vs. download time, for this demo, was 1:8 in favor of the Download time. Hopefully, the 40 hours it takes to download the game, is offset by how much time I want to spend behind the wheel.