One of BA's perils is "OpCo life". In other words, being an operating company of a large FTSE 100 company that is heavily influenced by Spanish and some extent Qatari management, then local expenditure has to be justified against returns, justified against the other OpCo needs, the Air Europa project, and justified against an IAG wide solution. And bearing in mind IAG does have a central IT team. So until recently while BA could have a small BA based team for the App, and limited resources for internal systems such as Pegasus, it was not allowed a fully functional IT team of its own - everything needs a business case, specified by a very small team, and generally outsourced to Tata / Comarch or some such. Even for the App, that is at the mercy of getting information from sources beyond the reach of the App team. I know people get cross about this, but it is genuinely the case that BA could stop being a pension fund with an airline attached, and instead become an IT outfit with an airline attached. It's very easy to end up with a monster in this space.

The thing that has changed recently is that BA is now allowed a 200 person IT department again, so it will take some months before we notice much, but in time things should get better in this space. My suspicion is that the OnBusiness mess, which is Comarch, was used to leverage the resources.