The one-worlders in Brussels doing all they can to keep the UK from leaving. By giving Britain an extension, they hope that Britain somehow comes to their senses and eventually cancels Brexit. To these people, the notion of "the will of the people" matters not.
https://www.reuters.com/article/us-britain-eu/eu-offers-pm-may-brexit-pause-to-october-31-idUSKCN1RM0LX
https://www.reuters.com/article/us-britain-eu/eu-offers-pm-may-brexit-pause-to-october-31-idUSKCN1RM0LX