LOL on the entire 'ROI' discussion. It's not that important, but the term is obviously incorrectly used for Dash masternodes and staking projects for example.
ROI applies to anyone with 1 Dash or 10 masternodes. It is your return on your invested capital, thus in USD/EURO/... It can be positive or negative. It can be -98% or +10,000%.
Dash masternodes (and staking) coins give you a return or reward which is not ROI. Currently the masternode service reward is around 6%, but that is not 6% ROI. If that were true, Dash would be a scam. Ergo, Dash should never apply the ROI term when it comes to Dash masternodes.
I have no problem with that, it just means ROI has more then one specific definition.
Sure, sure ... you don't have it. The potential DASH buyers you are trying to cheat are the ones who have it ... "coincidentally" with your "usual" confusion always in the same direction: Your pocket.