Well then, if no one wants to donate, then why should the government be promoting a cause that steals from those who earned it, to give to those who didn't?
Because there are both economic and social costs associated with high income inequality. I think anyone would agree that it is detrimental to a society to have a massive gap between the rich and poor, which comes to exist when markets are left free from government intervention. For example, when the 'Chicago Boys' took reign of the Chilean economy between 1973 and 1989 average wages plummeted, the minimum wage plummeted and the standard of living steadily decreased and the poverty rate saw a massive increase. Another example is New Zealand, which in the 80s and 90s also saw large scale deregulation (although not to the extent of Chile). Again, there was a massive increase in poverty and economic growth stagnated, despite the rest of the world's economy growing steadily.
As you know from studying economics, markets sometimes fail due to the existence of externalities. That's why the government needs to intervene in issues such as healthcare, education and other social issues to ensure a high standard of living for people. Remember, the economy exists in order to benefit the people - not the other way around.
Also, this bill does nothing like what you propose. It will not be subsidised by taxpayers, it is just a forced cost onto you. It essentially says: I don't care whether you want this or not, you're going to buy it. This is very unlike socialised healthcare and education, which is paid for by the taxpayer, and not paid for in full by your own cash.
I never proposed that the system is subsidised by taxpayers. I was just pointing out that even though there will of course be people who don't utilise the services, the simple existence of the services will fundamentally benefit the majority of students. My example was that just as some people don't use libraries (but still pay taxes), some people will not use student services.
It's certainly an interesting argument. Maybe we should make a thread about government intervention in the economy?