Nobody in this thread claimed that.

The person you were replying to was not talking about SF but you specifically called out SF so you were implying that

The thread started with "$200 is a lot for most of the world", the person I was replying to said "no it's not, now anyone can sell to billions of people", and I said "company success being concentrated in SF shows that that's not true".

I didn't say "only SF can afford $200/mo".

"I guess all those people who live in not-SF just can't be bothered to succeed!"

I explained it in my previous comment, I'm not going to explain it more than that.

Again, if you think that only successful companies are in SF you live in a bubble.