The UBI experiment HAS NOT FAILED.

"Although many reports claimed this meant the end of basic income in Finland, this actually means that the experiment will only run until the end of 2018, as initially planned.
Instead it will wait for the results from this initial trial before making any decisions about a wider roll-out of the initiative."

Full story : http://www.wired.co.uk/article/finland-universal-basic-income-results-trial-cancelled