That is true, if the dynamics stayed the same over time. However, since they change, we would not be in the same situation. For example, there demand for HIVE is likely to start increasing over time as more applications and games start to be developed here.
I of course also see a lot of increased demand for Hive in the future but to create huge oustanding debt, betting on a large increased demand is another thing altogether. There could be crypto winters, all sorts of impacts from regulation, geopolitical events, unknown security vulnerabilities discovered, who knows what. What if the bonds are very successful and we have e.g. $100 million or more in outstanding debt? People will expect the HBD to become liquid after 2-3-5 years (or however many), at which point it could be converted to Hive and sold, which would push Hive's price down. So we'd have a situation where the price of Hive is expected to potentially go down significantly as the HBD becomes liquid - not a stable situation, in my view. We need stability if many apps are to be built here.
However, from an investment perspective, I cant lock in anything in savings. If it is 12% today and the witnesses move it to 10%, then as soon as I claim my rewards, I am at the new rate.
Sure, if the bond interest rate is fixed and not changeable by the witnesses. But such a fixed rate will probably create another vulnerabilities. In addition, the savings locks up my money for 3 days only, so if witnesses move the interest rate down, I can just pull my money out and put it somewhere that suits me better. The bond locks up my money such that I can't reallocate it to great new opportunities, which there are many of in crypto.
Savings has all the advantages of the bonds but without the disadvantages. Am I missing something? The main disadvantage of savings you mentioned was that the HBD is locked only for 3 days so it can be taken out and potentially create instability if people rush to convert all that liquid HBD for Hive. So maybe we can look more carefully at the protection the haircut rule creates and whether we consider it sufficient. I guess you are going for enhancing the haircut rule by locking up the HBD for long. Maybe we can enhance it in some other way that doesn't have the abovementioned disadvantages.
I guess we are both talking about increasing the inflation of the virtual supply (Hive + HBD), which can result in a downward pressure on the price of Hive if people come in with capital, reap the interest and sell it. You want to counteract this tendency by locking up their capital for years, so there wouldn't be much downward price pressure on Hive except coming from the interest, and betting that in the future the demand for Hive will be greater so the unlocking of the HBD would not be a problem. Well, what if instead we thought of a way where people can put their capital here and reap a big interest, but as they do so they immediately help the ecosystem. In other words, instead of locking people's capital in order to prevent them from simply harvesting and selling the increased inflation, which creates a benefit for them at the expense of the network, how could we put their capital to work for the benefit of the network? This way there is a win-win instead of sucking value out of the network. Any existing financial instruments that create a substantial use case and benefit from people bringing in their capital?