alt Hacker NewsPerhaps a little tin foil hatty and definitely not the only reason but Microsoft owns Github and also makes a boatload of money off of Azure. Incumbent cloud providers like Azure have a major advantage in terms of having plenty of IPv4 addressing available whereas a new entrant to that market would have to buy or lease that space at a premium. Thus, these companies have an incentive to keep IPv4 a necessity.
IPv4 is going to be a necessity for many many decades no matter what Microsoft do. Even when IPv6 is at 99%, people aren't going to want 1 in every 100 people to not be able to access their site at all. It'll need to be like 99.9% before we start seeing serious IPv6-only services.