Major upper hand INS has in this that they are accepting Fiat currency as well. which means the countries that don't allow cryptos to be a mode of the transaction may also come on board.

decentralized doesn't actually mean that everyone can see the data clearly. it's a method to secure the system from hackers, downtimes and even loading speed. I would highly recommend to download any coins blockchain and try to see what kind of data you get on your computer... @milanm