Im doing neither myself. My point is, I invested capital in mining equipment and look to get the best return. The coin that a script selects as most profitable, enables me to do that. Which one that is, doesnt interest me one bit, I probably know nothing about it. I just care about the daily mining revenue and convert that in to some currency I do believe in.

Im sure a lot of people see dash master nodes the same way, like mining machines that dont require a ton of running cost. Like Hashtakers and Prime controllers, remember those? You invest a non trivial amount of money, to get an expected x % ROI. Which works fine as long as dash value is stable and certainly if it goes up. Which it did for quite some time. Not surprising, if people have to buy 1000 dash per node, and today what, >70% of all Dash is in such nodes?
that must have created quite a lot of demand.

Anyway, 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.