The Mac Pro is expensive enough that it takes it solidly out of the "consumer" arena and puts it into commercial/business customers. Those customers will take the time to investigate and determine what they need for the job.
There have been times where the Mac Pro dipped into the high end consumer market explicitly, but we're not in one of those times now.
(Do note that some consumers WILL buy "commercial" products and Apple's obviously aware of that, but I suspect it's hard to get them to recommend the Mac Pro to home users.)
You can see this by comparing the marketing around the F150 (a consumer pickup that is used by commercial/business customers) and the F650 - https://www.ford.com/commercial-trucks/f650-f750/
There have been times where the Mac Pro dipped into the high end consumer market explicitly, but we're not in one of those times now.
(Do note that some consumers WILL buy "commercial" products and Apple's obviously aware of that, but I suspect it's hard to get them to recommend the Mac Pro to home users.)