We need committed projects, managers(team), that would want to improve on the blockchain technology with their coin, not just about making money at the beginning, they must understand that if their product actually brings something wonderful to the blockchain technology, then they as well as their promoters and investors would earn alot from it.
It's hard to stay motivated for the people behind projects when they have dumped most or even all their coins. It's not an excuse to neglect the project, but without incentive there isn't going to be much productivity at all.
That's the reason I rather see the founders and developers own a decent enough chunk of the coins in circulation to keep building, otherwise what's the point? I wouldn't be motivated myself if I had no serious stake to grow in value.
At the end of the day, no one forces people to invest in these projects.... it's their greed that makes them do so and nothing else. It's fine if you accept it being a gamble, but don't cry afterwards when things go downhill.
Lets be honest, we care about seeing working products with utility, but we like it much better when we can fill our pockets, even if the project doesn't deliver anything in the end.