What the hell are you talking about? MGS5 made 179 million on launch day, at a budget of 80 million.
https://www.vg247.com/2015/10/15/metal-gear-solid-5-made-twi...
The only complaint that Konami is going to have is that they didn't make their money back fast enough, when they could've produced countless shitty free-to-play titles instead of MGS5. With Mr. Kojima gone, that's the future we all can look forward to now.
AFAIK MGS2 WAS a commercial success ( > 6.000.000 copies sold in 2001 ), if it wasn't the case the Konami would have ditched that franchise a long time ago. It's true that both MGS4 and MGS5 went over budget, but MGS5 prologue was sold separately and had a moderate commercial success.
No what happened is that Konami decided Patchinko machines and Mobile Games with micro-transactions were more profitable than developping AAA Games(and they are in Japan) so they "fired" Kojima and its team earlier this year, making them unable to finish the game as they wanted.
Hint: You don't get to make 5 major console games (+Ground Zeroes), 4 portable games (2 Acid series, POOPS :D, and Peace Walker) if the games didn't make money.
Konami decided to go make pachinko games, that's fine. But in the process they fucked over Kojima, and screwed lots of fans over in MGSV.
Hoping for an eventual arrangement like they have with Polyphony Digital and GT.