Recently, developers are increasingly refusing their obligations and not afraid of the threat that the project will have a lot of negativity, it seems that they do not think about the future and only hope to raise money and hide.
What do you think?
You need to make it clear, what kind of obligation do you mean?
There might be two possibilities if a project failed, the first one is that it is really failed, it might raise some money but not enough to cover up their initial development. Some or most of the project that failed refund the investors money, and it is not a scam if the project is really failed.
The other one is that the project is a total scam, and no matter what you do, you will not get your money back.