I don't think the really high end stuff is ever going to come down much. All you have to do is look at the Xeons vs. non-Xeons Intel processors. Are the Xeons better? Yes. Are they better proportionate to their price? Not really.
I do think the fact that Thunderbolt is no longer Apple-only (and technically, it never was, but Apple was the only company that really adopted to a degree that mattered) is going to put a dent in the prices—at least I hope so.
I'm excited by a lot of stuff here:
https://www.akitio.com/thunderbolt3-series
Something like the Node product, if macOS supports it, would be killer.
I really get the idea a lot of the people around here that complain about what is and is not a "pro" feature have no idea what actual professionals do with a computer or what we typically spend on professional equipment.
I love the TB 2 version. I use it like so:
View attachment 670122
The monitor is the older Mini DisplayPort cinema, which is why I have the dock (plus the Dock has USB 3). The nicest thing is that workstation is available to multiple people in my house. I have a second one in another room because me and my wife can work from home and do on the same day from time to time. We can switch workstations and anyone with a Mac with Thunderbolt can hook up. Since my family runs Macs almost exclusively, even my mom and my sister can use a workstation—and they do.
On top of that, I have a Mac Mini operating as an iTunes and Time Machine server. It's usually headless, but it sits next to one of the workstations. I just plug in the Thunderbolt cable and it's not longer headless. (And I can screen share, and do, but sometimes it's nicer to hook up and sometimes I even set it up for guests staying with me.)
I've been very much on the Thunderbolt train since it became available. These docks were especially useful when I was using a 13" Air.
This is why I find all the dongle rage so silly. Sit down, plug in. I don't need any dongles or connectors when using my laptop at a hotel, on a plain, in the back of a taxi, at a remote office, at my in-law's house, or whenever 99.9% of the time. And on the occasions I do? Pretty awesome that Thunderbolt ports can be converted to basically anything. I'm not stuck with the port configuration bestowed upon me by the manufacturer (and Thunderbolt variants are VASTLY superior to their USB counterparts in terms of performance and CPU utilization).