Well maybe if Brexit goes badly. But if there's no deal in March they'll just extend the deadline and extend the deadline and extend the deadline, until nobody cares anymore and they can just declare the whole thing void. The whitepaper and departure of some stuffed shirts from the Temple of May is an indicator that they're looking for a deal which is like the status quo but with Brexit branding. https://www.youtube.com/watch?v=Wsi5xXOEmB0