the "Trough of Disillusionment"
My guess is that it will stay there. Blockchain is useless in a corporate environment that has servers, SQL databases and competent people to administer and program the stuff that is needed. As for Blockchain in the cloud, don't get me started. Blockchain's only useful application has been cryptocurrency and, if nobody has found any other use for it by now, there is really little chance for any stunningly useful new application to appear tomorrow.
And the criminals, scammers and other incompetent buffoons in charge of so-called Exchanges that regularly seem to lose people's virtual coins couldn't care less. They'll make off with the dough just fine, thank you very much.