At some point market will be overflooded with such blockchain solutions while coins like Nem will have REAL companies backups as they are wotking now.
Nem is not vocal on social media to much, and hyping how that will be better than x y z blockchain solution will be. Nem devs just more focus on real deals around a world (mostly Japan) than trying overhype coin to sell it with profits ASAP and move to next ICO.
Blockchain ICOs will over flood market soon and at some point many those new projects without real output will start looking like POW copy cat coins and end same way.
If you have to know when to stop, many of those projects will end like PnD. Same was with POW coins (who remember lucky,moon,bee,heavy coin now ?)

PS: Nem devs are doing that most devs skip - working with REAL companies.