I think they dropped the ball by not having two displays, though -- the $6K Pro Display XDR for the crowd who goes "OMG that's so cheap for a monitor like that," and a $1500 Pro Display (sans XDR) that's basically the 5K panel from the iMac Pro. I am hoping that either that's still coming, or at least there are people with some weight in the company looking at the reaction to the XDR display and its "optional" stand and saying, "Did we tell you so? Yes, yes, we did, Doug. We told you so."
Apple sells LG 5k displays for $1,299.95. AFAIK it is the same panel as the 27" iMac and iMac Pro.
More to the point, it's unclear if Apple is still actually selling that LG display, though:
That headline is phrased as if it's definitive, but of course Apple hasn't said anything. But it's over a month later than that article was published, and the display is still listed as "Delivery: Sold Out" for online ordering, and it appears to be catch-as-catch-can at physical Apple stores: the ones that don't have it just list it as "unavailable for pickup."
¹It's not clear to me if the Pro Display XDR actually has speakers at all, but its audience can be expected to buy a set of high-end speakers too, whereas a monitor aimed at actual users would need built-in speakers.
As you said, they’re going for a specific market with this product. They can always release a general-market display down the road. Focusing on a specific set of power users first is how Apple built its renowned culture, and it’s nice to see it returning to those roots.
The "kind of" part is this: Apple arguably built its culture first around the extremely hacker-friendly Apple II, then around the original Macintosh -- which was certainly expensive, but was very specifically pitched as "the computer for the rest of us." That segment is one that they're ironically a bit wobbly on right now. (The MacBook Air and the iMac are close.)
But: the Mac got adopted by the high end graphic design and print layout industry, and Apple started making higher end machines specifically targeted to that market like the Mac IIfx -- which was a $9K machine at its introduction in 1990, and that is not adjusted for inflation. As far as I can tell, that was their high water mark in pricing, but they've regularly had "flagship" models breaking the $4K mark at introduction, e.g., the Power Macintosh 9500. The sub-$3K flagship era of the Power Mac G5 and original Mac Pros is something of an anomaly. (Which isn't to say that I wouldn't like to see a headless Mac with internal expansion slots that starts at $1999.)
Apple actually was able to maintain this pricing for entry-level Power Macs and Mac Pros from 1999 (I haven't checked earlier prices) through the 2013 Mac Pro model. Here is a list of prices I compiled:
Blue and White Power Mac G3 (January 1999) -- $1,599 ($2,453 in 2019 dollars)
Graphite Power Mac G4 (December 1999) -- $1,599 ($2,453 in 2019 dollars)
2001 Power Mac G4 (January 2001) -- $1,699 ($2,453)
2001 Quicksilver Power Mac G4 (July 2001) -- $1,699 ($2,453)
2002 Mirrored Drive Door Power Mac G4 (August 2002) -- $1,699 ($2,413)
2003 Power Mac G5 (August 2003) -- $1,999 ($2,776), reduced to $1,799 ($2,499) in November 2003
2006 Mac Pro (August 2006) -- $2,199 ($2,787)
2010 Mac Pro (July 2010) -- $2,499 ($2,929)
2013 Mac Pro (December 2013) -- $2,999 ($3,289.83 in 2019 dollars, but you can still purchase an entry-level 2013 Mac Pro today from Apple for $2,999 in 2019 dollars).
Apple Lisa 1983 $9,995 ($25,143 in 2018 dollars)
Apple Macintosh 128k 1/24/84 $2,495 ($6,000 in 2018 dollars)
Macintosh II 3/2/87 $5,498 ($12,125 in 2018)
Next Cube 9/18/90 $10,000 ($19,177 in 2018 dollars)
Yes, the iMac Pro is certainly a nice machine, but quite expensive for what it does and again extremely limiting in hardware choices.