Players can already just download the full game before purchase, for the majority of games people play This is just more convenient, so it makes it more likely

Players can already just download the full game before purchase, for the majority of games people play This is just more convenient, so it makes it more likely to convert into sales If the game can't keep people wanting to play it more than a couple hours, and players decide they don't want to buy it anymore, they could already do that with a refund. Making games more convenient to play always increases sales, if you think there's any chance at all that the product you're selling is worth buying.