98% of coins probably die off in the first year or two.
(I'm sure someone has the actual statistics.)
Most devs don't actually care about the coin for the long term, anyways.
They care about an ICO, or premine so they can dump on the exchange, take their profits and let the coin die off.
Some would say that all altcoins are based only on speculative value. They are called as "bitcoin maximalists" by the supporters of different altcoins but who can really blame the bitcoin maximalists? The development teams of almost all altcoins have scammed the community in different ways while pretending that the project their building will be the future. Some I give the benefit of the doubt like the developers of Monero. They are not a scam yet but the truth about them will come out in time. The same with Ethereum.
Why work 8 hours a day 5 days a week for a shit salary when you can start your own vaporware foundation and make millions doing little work?