Leaving under the Withdrawal Agreement / Political Declaration leaves the Services Industry with a problem: The new relationship resulting from the PD will be based off the template of the WA, and that does not include Services. So any new Services relationship will be starting from scratch, which will reduce access compared to the status-quo, increase uncertainty, and result in investment/jobs being redirected to other regulatory environments to maximise the efficiency of those organisation. Bummer.
But I don’t believe this justifies immediately junking the WA/PD in favour of Norway+: