I don't think that 2020 is the year of decentralization. Because as time goes by, we are getting further away from decentralization. Before bitcoin was born and there was complete anonymity and now KYCs exist and centralized sites exist. But we can't blame them since they provide faster service compared to decentralized sites.
You gotta understand that projects like Blocknet, and other DEX orientated companies is working hard on the whole user experience. Soon you wont even see the difference between a DEX and a CEX.
There's a lot of FAKE "DEX's" out there, so better avoid them.
Blocknet will get a lot of competiton, and already has, but it's definitely the most decentralized exchange of them all if you actually research the code.
It's a good long term play for sure!