From what you all tell me of Dark, it looks like they are supporting their price NuBits style, offering interest to encourage holding. As long as the interest rate is above the long-term price decline everyone holding is breaking even.
I got to thinking about why it is so hard to bootstrap a business in crypto and it is because NEW investors are always bailing out OLD investors which sucks up all of the capital. We can easily resolve all of this by placing unclaimed BTS from delegates INTO a yield fund for BTS holders. Having a yield fund would encourage people to move their money off of exchanges and to hold it for longer periods of time.
The side effect of a yield fund is that it wouldn't actually debase ANYONE except those who are looking to cash out short term. IE: transfer of value from those who want short term liquidity to those who are in this for the long run.
In effect YIELD == DRK model. Whether or not this is a good idea remains to be seen.
It won't encourage holding . Exchanges can easily "honor" the yield on their site so that people won't leave .
Also I doubt Dark's price is base on any of its features , but rather a really well funded group of speculators to pump it .
The difference between the interest given by the banks and the interest in crypto is that , interest given by banks actually come from their business , from the borrower , so it's an actual wealth for the holders . While interest in crypto only gives you coins , but doesn't add extra value to the existing system , so in the end you get more coins , but you don't get more value .
The only way this will work well is the kind of interest supported by the business income instead of delegate dilution .