It's ultimately up to Parliament to decide how much to appropriate. You have a range of officers, agents and feedback loops from the Information Commissioner, the Privacy Commissioner, the Auditor General, the Parliamentary Budget Officer, the official languages commissioner, the Conflict of Interest Commissioner, the lobbying commissioner, the integrity commissioner, and on and on.
There are about 3,000 people and about $40 million invested in watchdogs, and that doesn't go to the people who work in departments and agencies actually having to chase down information in computer systems, filing cabinets or old archives and paper documents.
The private sector uses a term “cost of sales” or “cost of production”. There is a cost of transparency within the federal system, but you have the power of the purse and you have the ability to affect the appropriations and supply to those agencies.