It is unreasonable to expect your community to never grow in population or wealth.

Also, I think you are underplaying the degree to which "disliking people with Macbooks at coffee houses" plays into it. There is a lot of wordage in that article dedicated to describing things other than rising rent that is bothering the "natives".

One example:

""Your whole social world is tech," Garcia, 37, said as he finished a bagel sandwich at the Creamery, a cafe at Fourth and Townsend that's a hotbed of tech deal making.

"The reality is that there are real people in San Francisco, but they're usually in neighborhoods like the Richmond or Sunset," he continued. "The wall between them and us, so to speak - not to get too postcolonial about it here - is pretty high.""

Here the "native" has decided that "tech people" are somehow less "real" because they are unlike him. People like Garcia might try to dress up their issue with "tech people" as merely a matter of rent and economics, but what it really boils down to is bigotry.

If I have to put it into words, there's been a tangible shift from "let's do something interesting together with this cool new thing" to "how can I get rich with this thing?", and that transition makes everyone else feel like a tool for your personal advancement.

Yes, exactly. You're hitting it right on the head in this thread.