In digital economy everything is IOUs. When you deposit cash into your bank account, you get IOU for that sum. Bank doesn't put that cash into a box in their vault that has your name on it. So everybody is already using IOU-currencies. They are very familiar with it. That's why it's not really a big step to start using fiat-UIAs in Bitshares.
With fiat-UIAs we are not trying to get more people from cryptosphere as our customers, but totally new group of people. Those who have heard that "blockchains are the future" but don't want to actually invest in volatile cryptocurrencies or derivative instruments. They can understand with very little explanation that fiat-USD in Bitshares wallet isn't actually that much different than dollars in their Paypal account.
And when they are familiar with the wallet and see that there are also other currencies and assets, it's not very big step to acquire also some of those... they are hooked. We have succesfully got them as our customers.
I really like the concept of Fiat on a blockchain.
I was explaining this concept to a friend of mine, how secure his money would be on the blockchain and he raised a very good question which I need help answering.
The question is: Let's say I put my savings on the bts blockchain in BitUSD, who or what can assure me that bitshares would be around in the next 5 to 10 years? What if people loose interest and the price of bts goes down to 400 sats, would I still have access to my savings? (I guess he means like a black swan event).
How can I answer these questions? Sorry I am just a novice.
There are lots of different risks. Keeping your money on the bank has also risks, so you have to compare everything and then decide what is suitable for you and your risk profile.
Value of cryptocurrencies and cryptoassets can go to zero if there is some fatal flaw in the blockchain. But longer the blockchain exists, less there is risk because it will be made better all the time. Longer it survives, stronger it gets. Also it's important to understand economic incentives behind the blockchain. These can make operating the blockchain very expensive (or impossible) in the long run. Incentives of Bitshares are the best that I know, so I personally have lot of confidence in our blockchain.
BitUSD is derivative instrument, so it has also some additional risk. But so far it looks strong. Of course there might be some problems and current smartcoins will be abandoned and people start to use other smartcoins with better parameters. That's why it's not necessarily very wise to put lots of value in savings as BitUSD. If you wait for a while, we all know better how well current smartcoin scheme actually works and we can better understand is it going to be used for a long time or not. If it's bad, we will probably see a better alternative in the near future.