If this is anything like the Filibuster and Gerrymandering bullshit that also exist in USA then the main reason why nothing is done is that everyone feels that "other people" are hurt more by the process.
...I mean, Filibuster exist because both parties are afraid that they lose some future election and lose their ability to stall and prevent the winners from accomplishing stuff and Gerrymandering exists because even though removing it would stop anyone abusing it, doing so would also stop YOU from abusing the system. ...And fair play is seen as a worse option than both parties having the ability to cheat and abuse the rules.