...at some point, the number of new master nodes will level off, as the ROI decreases and the required investment keeps going up. THis will dramatically reduce the demand for Dash, most likely resulting in a price drop. Now you have a problem. A lot of capital was invested in those nodes, owned by a lot of people who really dont care about Dash but did expect a high ROI. If just a tiny fraction of them begin pulling out, the price just has to tumble and cause a snowball effect, and I honestly dont see where the demand is going to come from to keep the price from utterly collapsing.