I can understand your frustration but i don't see the merit in EASA releasing their official database. This would totally nullify the integrity of the exams and thereby the qualification gained from them, too. What weight does an exam have if its questions and answers have all been provided by the examiner already?
EASA seem to have turned a blind eye to the question banks and so would argue you already have 'access' to the majority of the questions, the few you dont? Well this is supposed to be an exam afterall ...
And 3rd party question providers are often careful not to replicate questions 100%, that is partially why there is so much 'same question different wording' exam feedback.
All in all whilst frustrating, it is not difficult studies per se. Not when compared with medical studies for example, in fact i think they would jump at an ECQB type setup.