when a company, or similarly a country, a bank, a financial firm,.... creates a new coin based on bitcoin using the blockchain technology, they are always creating a centralized token and that is a creating huge difference. it may seem like nothing in words but in reality the difference between bitcoin being decentralized and global without any kind of restrictions regarding usage whatsoever and a centralized token that a company issues is a huge one.

they can try and make their own version and many of them are doing it, but in the end it will be just another altcoin in  a sea of altcoins.