I don't think that much rationalization is necessary.
Bad games (and I mean Big Rigs bad) are out there, simply because there is a market for them. We have a guy here in Hungary (calling himself 'freddyD'), who makes videos about him playing horrible games, ranting and ridiculing them to ash. He has a blog called Rossz PC Játékok (Bad PC Games) at 'rosszpcjatekok.blog.hu'. He scavenges the bargain bins and dusty, hidden shelves of big stores for horribly awful games, and makes funny videos about them.
Guess what...thousands of viewers watch his videos day by day. He has his own fan club. Much like Ben "Yahtzee" Croshaw, James "Angry Video Game Nerd" Rolfe, that Irrate Gamer guy and many others. The answer is simple: Hating on games became a trend. reviewers like hating on games, readers like to read gaming rants...what's not to like?
People like it, the reviewers like it, and the publishers like it, because after watching those awesome videos, some of the fans actually want to play those "shitty games".
It's not too far fetched, that some publishers and developers got around thinking "well, we couldn't finish the game, we have no more money/time/devotion/sanity left...so, we might as well aim for the "shitty games market", and at least get some cash back..."
And there are the others, who are going straight for the "well... if they like shitty games THAT much... let's give them some". Why, it's the perfect deal: you can, as a designer, ignore any and all errors you made during development, hell, you can even make intentional ones. As a publisher, you can churn out these "wastes of packagings" for about $3 a title, and you get marketing for free, you don't even have to do anything. The crap sells itself! HA!
Just my $0.02...