Now when everyone gets excited about bitAssets paying interest, I would like to point out to macro-economical perspective---
Why is that bank deposit used to pay nominal interest throughout the most of the recent history?
- well, this is primarily because banks were lending money, received from savers, to businesses, property buyers etc. at somewhat higher interest rates than they paid out to the savers on deposits.
And why were most businesses and property buyers were able to pay those higher interest rates?
- well, that's primarily because there was some positive real growth in the economy, meaning nominal growth rates exceeded inflation rate, and corporate profits and household income growth exceeded the higher interest rate which was due to the banking sector. E.g. fiat USD from savings were put into productive use by extending credit for investment within the economy.
So, here my questions:
- how would credit business work with regards to BitsharesX?
- how can bitUSD be lent out to businesses or property buyers?
- how would credit risk in such system be managed?
I will try to formulate more thoughts on the topic in the near future.
I am not sure if I am understanding your question properly, but let me attempt to answer anyway. First of all, BitShares X does not have any lending functionality as it is typically understood (meaning requiring trust in how the lent money will be used to eventually pay back the debt). I hope a future DAC will enable that functionality (I have some thoughts on that subject here).
It is true in a sense, however, that just like a bank, BitShares X is taking deposits (BTSX bids) and is making use of them to hopefully earn profits (in this case from shorting BitAssets, and the profits mostly go to the people doing the shorting not the DAC itself), and perhaps with this new interest proposal will now be sharing some of those profits with the depositors (BitAsset holders) by giving them "interest".
I do like how you are focusing on where the actual growth is coming from. So where is the growth coming from in the case of BitShares X that allows for such high (expected) interest rates? The answer is that it comes from the expected increase in value of BTSX. As more people adopt the system, meaning transfer their wealth outside the blockchain into BitAssets, this should drive the market cap of BTSX up. Shorts and BTSX holders get to benefit from that price increase. Since shorts can get higher returns than just holding BTSX, there is an incentive to short if you are a BTSX bull rather than just holding. But there is competition for shorting (there is after all limited BitAsset demand). So shorts are forced to share some of their expected profits with the BitAsset holders to incentivize them to allow the shorts to happen in the first place, just like banks need to incentivize depositors with interest to allow the deposits to happen in the first place. As long as on average BTSX value keeps growing at high rates, a high interest rate on BitAssets can also be sustained. Eventually, sometime in the future, when BitShares X is saturated (meaning there aren't any new people with wealth left to convince to adopt this system), BTSX growth should settle down and thus BitAsset interest rates will be forced to go down. I think some non-zero interest rate should still be possible then because the DAC is still able to earn revenue from transaction fees and market fees from operating the decentralized exchange.
I think it's important to preserve the distinction between asset interest, shorting profit, and BTSX share value appreciation and deflation. The default position for participants is holding BTSX, and profiting as adoption increases demand, and destroyed fees deflate the supply. As these things happen, the BTSX shares you hold increase in value.
Shorting and longing assets is a distinct sub-business. The shorters are leveraging to amplify their gains betting on BTSX increases, but doing so requires finding asset holders who are willing to miss out on potential BTSX gains in exchange for stability and interest payments. The asset holders have to bet that the shorters are over enthusiastic about BTSX appreciation.
The actual value growth is all from adoption and usage of the entire platform, and that's the baseline for shorting and asset holding. Relative to that baseline, at any given moment it will be profitable to go short or long, but not both. Either the shorts profit at the expense of the longs, or the longs profit at the expense of the shorts. The interest rate should be such that the market is approximately evenly split on which is expected to be the more profitable position.
I don't think normal transaction fees and revenue should ever be used for asset interest, because that erodes the baseline. Interest should be exclusively payed by those taking short positions.