While I agree with your thinking, at least for me, it's harder to keep focused on a hobby if books that I want rarely come available.
I love L.B. Cole covers but haven't bought one in about a year since they are rarely offered for sale.
I've also sold a number of Atlas books over the past six months because I realized at this time it relatively impossible to put long runs together in HG. Yeah, I could pay five times guide to a certain dealer for ungraded HG copies, but even graded, the price is way too high.