Ever walked through a tourist district and seen someone handing out freebies of some sort - palm readings, or flowers, or what have you?

Once in a while an inadequately wary tourist accepts the freebie, and then they’re accosted angrily for payment/gratuity.

I understand it’s not a perfect analogy, but the bottom line is largely the same: if you give your content away for free, you want payment, you aren’t owed payment. Giving stuff away for free and then crying about the payment you’re owed is a bait and switch.