Yes but I'm sure SEN is only actually profitable on an operating level (and bearing in mind the comments in this article related to the busiest period of the year)...if you take into account the actual costs outlaid by Stobart in terms of investment in infrastructure I'd be surprised if SEN actually makes a true return on investment within 10 years..
I suppose the same argument could be made for PIK - that if the Scottish Government were prepared to invest in (and write off) the investment needed to build a new, efficient terminal of the right size and integrity to cut costs of operation (in terms of maintenance, manpower, heating/lighting etc) then there is a very plausible argument that PIK could similarly be profitable even with pax loads at around their current levels (and bearing in mind the other businesses on site).