To answer your first question, it's the users of the app that are going to make you money, not investors. No users and this app and your money goes bye bye.
If, and it's a big if, this app is going to make anyone money its going to be because millennials are going to use it in droves. Millennials are going to be the ones who embrace this technology, not old geezers. Most old timers have trouble turning on their Iphones let alone use an app based on a currency they have no faith in. Don't forget that millennials are the only reason we're even talking about crypto/bitcoin because they're the only ones who believe in it enough to invest their life savings, however stupid an idea I believe that to be. Older generations are laughing at crypto calling it a fad and saying it will be gone in 2 years. Watch the news, you know this to be true.
To answer your 2nd paragraph, the ONLY reason Singlepoint is launching this app is to fill a need, SPECIFICALLY, in the American marijuana business, that other payment processors like Square are not fulfilling at this time. Banks refuse to work with the marijuana industry because it is illegal. This gives Singlepoint an entry, their only entry.
If you think Sing is going to release an app, one that you haven't even used yet, and are immediately going to challenge Square or any of the other big boy payment systems out there, you are nuts. Their entry point into the world of payment processing has to be the American marijuana business, without that they will get chewed up by the bigger, better financed and vastly more profitable Goliaths of the industry.
The only dots I like are dipping dots. All others are moot.
