It is actually cheaper to provide tertiary education for free rather than require pointless qualifications for jobs that could be done without a degree...It is cheaper to fill universities than have the financial and political consequences of kids on the dole.
But Universities are a business, and the bonus for government is to raise expectations needlessly in order to saddle the majority with a lifetime of debt before they even get started...
How come other countries can manage to get a highly educated population for free or almost free?