What do you think of drugwars in terms of long-term viability? I feel like it is totally fine to get into now, but in a few months it will be nearly impossible to get into.
In a few months there will be so many established accounts, and so many people putting tons of resources into the heists, that a new person wouldn't be able to win any battles, or gain anything meaningful from heists.
(Keep in mind, as I write this I only started playing a few hours ago, so this is just what has crossed my mind so far)
It's a game. It will be up for as long as people play it.
You can't attack people who aren't logged in. Storage buildings are cheap and protect an amount of drugs from being stolen. The dev can implement a protection timer for new accounts in the future or solve the problem in other ways. He's active.
It's not an investment fund. You can play for long enough until you get something from heists if you want. You'll eventually get something, because it takes more and more resources than your production every time you want to level up your buildings further, which is good for newbies and bad for veterans. The dev is considering more options to increase game revenue (like ads) to boost the daily heist rewards a bit.