In those years, they have lost faith because governments are now using the public to manipulate. This Mark Zuckerberg has argued in a recent statement that people once believed in the decentralized nature of technology.
The reason for this is that only the centralized system can be under complete control. It is only the fact that the BITCON HSS has expressed concern at the global level of decentralized governments.
Source - https://www.ccn.com/fighting-bitcoin-cryptocurrency-trading-threat-government-policies/