Let me state again that 99% of most ECs are made up of volunteers. Of that, the greater number of strata schemes have a Strata Manager who oversees most work orders and often steers the EC towards certain contractors (I would be more worried about this if I were you). The fact that an internet forum is replete with poor examples is par for the course: I doubt flat-chat would be as popular if its mandate were to only post ‘glowing’ examples of strata living….
The examples you have provided in your last post cannot ordinarily be decided upon by a single ‘EC’ member; they usually either need a percentage of the EC to approve (in the case of work being done to a certain dollar value), or need to go to the OC at an EGM/AGM in the case of scrapping existing contracts or awarding lucrative ones.
If you believe your EC is made up of both corrupt and/or individuals, then as a member of the OC (an authority higher than the EC), there are many ways to address the issue and this forum has given many different pointers on how to do that; they vary from simply attending every EC meeting, being on the EC, challenging the EC to prove how contracts were awarded, having a ruling applied by the tribunal to dismiss the EC and appoint a manager, etc, etc, etc.
Getting things done in Strata is often hard enough with a law that compels an EC member to declare each and every potential conflict.