I moved one of our daily workflows over to Kimi K3 on Fireworks. It replaces two sales assistant positions, and was about $50/day for 14 million tokens total (in/out). They surely are not subsidizing this price as it is just inference only and other providers are even less money.
The general model for subscriptions is that power users are subsidized by subscriptions of casual users, like a gym membership or whatever.
This is a little dicier in post-agent AI, because it's easier for casual users to automate power-user consumption, but the providers have done decently in discouraging that.