it doesn't make sense the vast majority of the time. the higher ups definitely want to make money so I don't understand where the ego comes in when they butcher book/video game franchises at the rate they do.
It's not ego to be fair... I've heard the argument since the 80s.. The first thing is the plot.. Video games are hours long. Usually with a hundred characters, a convoluted story full of side stories, and usually not written by any type of top writer... Or they would be writing for movies right?
So they gotta condense all that down to a 90-180 minute movie.. And once you start cutting all that shyt down, the whole damn story changes. Is the story even good anymore? Is someone who never played this game going to want to see this shyt?
Ok well we can't have 15 fighters so lets include 8.. We can't have that story cause it's unrealistic for human plumbers so switch it up. Nobody is going to care about a fighting tournament so lets make a new character they can love. We can't have this cartoony Sonic running around, let's make him look more real so it looks more believable on screen.
This happened a lot more back in the day, when video games were hokey, and hollywood didn't have the effects either. They kept bombing. So Hollywood lost faith in them, like they did comic book movies.. That's why the first x-men was so hokey and went away from their costumes... They couldn't believe audiences would watch these guys in yellow spandex. But now here we are where video games are better than ever and more popular than ever and they are cranking them out AND believing in them. Lego series had a lot to do with that too.. Let's not front. The movies are popular off the success of the games, not so much the toys.