It's difficult to comment on how or why other green initiative projects fail, but lack of funds is the obvious one. Not all projects actually raise millions (a lot of smoke and mirrors in the crypto world) and I guess if the initial IEO/ICO did not raise the required capital for the project to implement their projects, then promotion on exchanges is the next step.

Of course there have been one or two that were apparently successful and raised tens of millions only to dissapear and then there are blatant scam projects which never intended to fulfil their promises.

Our project is struggling for funding, but it will continue regardless starting with our marketplace and continued colaboration with innovators, that is where we hope to be different and who knows what the future may hold.