Every project needs blockchain but there is one problem that made all those projects die, and that is the speculative hype. When you read through many white papers, people really analyzed how centralized systems are a cheat but as I said, the overhype caused all the doom and almost every project died. To me, everyone still needs the blockchain technology and that's why after the bubble, we've seen even already existing companies and firm trying to implement blockchain in one way or the other.
Why would every project need a blockchain? That doesn't even make any sense to me. While blockchain is a very good solution to some problems, it is not a better solution for ALL the problems.
To be honest you are asking the wrong question.
The question to ask is what projects actually need cryptocurrency, because there are many projects that can actually benefit from the use of the blockchain but do not really need a native coin.
Blockchain and cryptocurrency are two different things and maybe you should do some research on the difference before digging in further.
I am well a aware of that the currency is just a byproduct of the blockchain mining (as the rewards motivates to keep the blockchain secure). But the question remains even if we talk about just platform tokens. Some of them have an use case, some of them exist just because of the ico funding model. And i was answering to the claim that "Every project needs a blockchain". So maybe you should read before answering.