Your acting like game development is simply going from point a to point b
Projects taking a shift is just standard when doing something creative that pushes the bar higher.
It's unfortunate but it isn't necessarily bad management. It's more bad planning than management especially if you can still manage to get the team to execute the new idea.
Bad management is aliens colonial marines. Bad planning, bad direction bad everything.
As a game developer i know exactly what it takes to make games. So... pretty sure i know what it takes.... where things get bloated and end up costing money, cutting content and what not.
Also.. plenty of other developers that have shown quality work without compromising the integrity of the overall experience.
First to come to mind... and its a western developer. Is Naughty Dog. They also have cuts, edits, changes that are big, small... but in the end, they give a complete experience. Other consistent game developers. 343, Turn 10, Irrational, Hello Games.. i mean i can keep going.
Hello Games is a good example of gameplay driven games that is not compromised even tho their scope is insane with their latest game. But they also did Joe Danger, which is awesome.
There are other factors of course, like budgets being different in Japan, and who they hire for outsourcing. But the fact remains... good plans and a solid overall arch and scope makes for less bumps down the road. We all know game development is not straight. Something need to change... but being aware of were this can happen, can lead to assess risk in the project.
Look at it this way.
MGSV...
unprecedented scope
new engine
4 console sku delivery + pc
QA on such a big title + tuning
VA talent
Just the 2 engine and scope is big enough to bring some red flags. Some questions need to be asked? Is this necessary? and what do we loose if we make a more contained experience? If we reduce the game space 50% is the experience still the same. You bet your ass it would be.
Also, it seems to me that this game gets one pillar right out of 2.
Gameplay is king. They got this one right. Kojima wanted to do everything in gameplay. Infiltration, extraction... and mobility and what not... they got this down.
More heavy narrative and themes, tied to gameplay - they fail at this.
Could they compromise to give a better experience... i am pretty sure they could.