They have so much demand because they are giving so much away for free.
I used 76 million sol tokens on Saturday, I have 45% still left on the week and I still have two full resets to use before October. For $20.
I used $61 dollars in Fable 5.1 credits too this weekend because I have to use that up this week. I paid nothing for those besides my $20 a month subscription.
How much would I pay at the actual API price? Nothing. Zero. My demand would drop to zero because I would just use the cheaper alternatives.
If a doughnut shop is giving away free doughnuts 24/7 my demand for doughnuts is going to go way up too. Through the roof actually because I know a doughnut shop can't give away doughnuts forever. Giving away free fancy doughnuts is not a sustainable business model.