Do you really believe that DeFi is the next real big thing?

[sorrros]

Hi, I see that there are a lot of topics about DeFi, it seems that it is a pretty popular concept. But it is connected with many problems. For example, all of us have heard about MakerDao master keys - so it is really decentralized, again we have to believe that these keys won´t be abused in some way? Or what happen when cryptocurrencies suddenly crash, what will happen with the collateralized stable coins, when we drop below the collateral value? Do you know about more interesting problems, please share it with us!