YC has advised startups in the past that it's easier to sell a single $100k customer than 100 $1k customers.
It would also be relatively surprising to learn that i.e. the Chinese providers are OOMs better at inference than OAI/Anthropic (like their prices would imply if they were in a perfectly competitive market).
DeepSeek's price hike is mostly driven by increased demand, for example. It's not about losses so much as they don't have enough infrastructure and need to reduce demand somehow.
But the API price is likely simply regular supply and demand, charging as much as the market will pay. Corporations are dropping insane amounts because it's still peanuts for many industries. Software has just been ridiculously cheap before AI. So high prices are still low for companies if it eases some bottlenecks.