Good point as to counterparty risk regarding market makers and centralized exchanges.
In a hypothetical situation where an exchange went insolvent for some reason, it could leave all Nubits owners holding the bag. If the original market makers lose all (or most) of their money due to exchange insolvency, they could decide not to be market makers anymore. At that point after the original market makers losing a lot of money, who would sign up for that job to be their successors? You would have to be crazy... and thus the "market peg" could be broken just like that. It would take a long time for a market maker to make enough money to where exchange insolvency would not put them in the red considering the amount of money they have on the exchanges.
That added to the risk of fractional reserve lending and quasi ponzi-like schemes that could be done by market makers without anyone knowing about it, Nubits looks like quite a risky alternative to bitUSD. Not to mention all the other hypotheticals..
Does anyone know how much Nushares are selling for? They have been using Nubits volume as a selling point, but I think this could be easily manipulated at very little cost by the developers. Assuming they had a lot of capital, and I am assuming they do seeing as though there were at least $2 million Nubits printed and the potential to sell 1 Billion Nushares for this purpose, $100,000 in volume could be bought with only $400.
It would be a sneaky/slimy marketing scheme to give confidence to Nubits buyers under the guise of actual volume. There would be no way anyone could prove this isn't happening.. I just find it hard to believe they are doing $100,000 plus in volume per 24 hours on a consistent basis like coinmarketcap reports. I have seen it higher than $200,000 at times and it just seems suspicious considering how new the technology is. Suspicious in that people are blindly trusting it for large sums of money right after its release without it being extensively tested in the real world and the solution proven to work consistently over a certain amount of time to trust that it will function properly.