Every patch has to be tested
Of course, lots of things are not fixed, both in software and construction, that’s why the air conditioning in my building breaks down every month, the ceiling has damp patches, and the swipe card doors are always breaking – they were never specced properly. Vendors try to avoid at all costs putting out patches after the product has shipped, because every patch has to be tested, and supported. The reason buildings look rigid is because the expensive interior design software bits to change – the solid things that get put in first, aren’t changed once they’re in. But anyone who’s seen episodes of Changing Rooms knows that for more individual projects, sometimes the client doesn’t have a clue what he wants.
