Ok, sure - I'll bite...
Disclaimer: I own a number(4) of Apple iPads: G2-Mini, G5-Mini & G1-8.6-Pro, G3-11-Pro (M1).
I'd wager that besides pricing themselves out of the market for their offerings Apple's largest competition is from their EXISTING products - IE: there is no "must have" or "killer application" that is non-existent on the older models or have night/day performance differences on the new ones enticing existing customers to upgrade.
My personal use of the "pro" iPads is that the addition of a keyboard (and track pad in the case of the 11" iPad) make AWESOME small&light "laptops" (3 of my iPads have Cell phone radios).
In other articles I see that Apple has suffered more then others with reduced sales of their products of late. (laptops & cell phones)
I guess that there actually DOES come a time when a "Apple" product simply costs to much.