alt Hacker News> They give users 2 choices: a) use their service via their public API, with the client(s) of their choice, at the regular price point; b) use the apps they provide, which use a private API, at a discounted price point.
There was a third choice, which was better than both of the ones presented: use any other client that can talk with our API, at whatever usage rate they deemed acceptable. If the "private API" was accessible via OAuth, then it's hardly "private".
We can argue all day, when I signed up there was nothing saying that access was exclusive via the tools they provided. They changed the rules not because it was costing them more (or even if does, they are losing money on Pro customers anyway so arguing about that is silly) but because they opened themselves for some valid and fair competition.
There was no third choice if they didn't explicitly state that there was.
> If the "private API" was accessible via OAuth, then it's hardly "private".
If you invite people on your porch for a party, and someone finds that you left the house key under the mat and went off to restock, then it's hardly "private". It's perfectly fine for whomever feels like to take the party indoors without your permission. Pretty much what you're saying, reframed, but I seriously doubt you'd agree to random people entering parts of yours premises to which you didn't explicitly invite them.