So why are student clubs being giving an effectively unlimited budget out of proportion with the number of members? At all the universities in my country, stud

So why are student clubs being giving an effectively unlimited budget out of proportion with the number of members? At all the universities in my country, student clubs (whether they are about sport, non-sport competitive activities, interests and hobbies, or even 'drinking clubs') get paid by the student association (which has a finite budget to provide services to students) based on the number of students in the club. Student sports clubs are unlikely to be able to afford any full-time staff - but that isn't really necessary when there are plenty of club members willing to volunteer. I have to wonder how any university could not have at least some limits on how much university money clubs could spend per member.