So yeah, 79 million PCs were indeed sold, but I have a strong feeling that many of those were sold to businesses who take a hard line against SecureBoot. But if I, Joe Average Consumer, express a preference against SecureBoot, retailers and OEMs will just sneer and say "F-you, you'll take what we give you". Just like that cable company [1].

[1] https://www.youtube.com/watch?v=0ilMx7k7mso