GLCs,are they really helping the malays?

I am in the mid of finding out weather GLCs is really helping the malays. All I can say is it is control by some heavy duty political party headed by some political group only and the vehicle may be being used as a vehicle to profit some 'Sdn Bhd' people and its close supporters only. Some of this GLCs is paying out a hefty some of salaries,allowances and claims to their top executives. Lets compare them between eg TMB the then Jabatan telekom malaysia! Or who actually controls MRCB and the list goes on. Are this GLCs being abused?