Similar to why Disney paid billions for Star Wars: the company was easily capable of replicating the product; the issue was replicating the brand. That brand has a proven track record of multi-generational appeal.
These creative endeavours have a soul, or an essence, for want of a better term. You can replicate a game or a movie and it will feel utterly soulless compared to the original, even if you can't visibly notice a difference.
You could reproduce Minecraft but even the most infinitesimal divergence from the original will make it feel fake. Maybe the controls have a different 'feel', or the way the scene is rendered feels a bit off. It's just not Minecraft any more. There are just so many quirks and details that will be lost in the translation, or even patched over if they're seen as bugs.
It's no different if you ported a game from Unity to Unreal and then to CryEngine. I'm sure that with a blind comparison you would be able to 'feel' the difference.
And the same for films. The way these things were created has a lot of influence over the end result.
On the other hand, it's exactly what can make a remake or remaster so successful. The Resident Evil 2 and 3 remakes that followed Resi 7 were phenomenal! Not totally faithful to the originals, didn't try to be...they just took an older game and gave it a new life.
People don't go to Starbucks because it's the best, they go to Starbucks because mocha frappucinos in Lima and London taste exactly the same. Any divergence, even an infinitesimal one, makes the frap feel fake.
The secret ingredient isn't orange peel, it's $4 billion a year in marketing.
https://www.businessinsider.com/what-happened-to-the-cocaine...
According to Business Insider, the beverage company has a deal with the Drug Enforcement Administration to get coca leaves so that the world can get its Coca-Cola fix. The DEA lets Coca-Cola import coca leaves from Peru and Bolivia in order to get the part of its secret recipe, which it hides behind the term "natural flavors" on the ingredients list.