Normal start-ups (i.e. not Valley Bubble) and small shops are almost never able to pay that much, but medium and large clients will easily pay that rate for established senior engineers WITH REPUTATIONS.

As much as we like to think technology is a meritocracy, at the end of the day, it always comes down to who you know. The charitable interpretation of that fact is that there aren't a lot of ways to gauge reputation, so it's mostly about who can vouch for you.

Source: I co-founded a software and design consultancy co-op (https://www.fountstudio.com/about).