A line-up with less options, like one without a M1/M2 Pro desktop, forces consumers to spend more to get more-than-entry-level performance, or spend less and settle for entry-level performance."End of discussion". No You're just confused. We're talking about a Mac Mini with an M2 Pro chip, not a "Mac Mini Pro." the Studio can definitely be as the "Mac Mini Pro", but there isn't a Studio with an M1/M2 Pro chip in it.
From your perspective, why is Apple still selling the Intel powered Mac Mini? They've had plenty of opportunities to discontinue it, yet they haven't. Why? From my perspective, it seems obvious that its waiting on its replacement. If Apple doesn't plan to release a Mac Mini with an M1/M2 Pro chip, why did they choose to start the Studio at M1 Max instead of M1 Pro?
"And on that note, I really feel like this is all about price -People want a desktop M2 Mac that is on par with Mac Studio but costs less."
A Mac Mini with an M1/M2 Pro wouldn't be as performant as a Mac Studio with an M1 Max though... People do want a cheaper option, but they would be trading a lot of GPU performance to get it.
Apple will only do something in-between M1 mini and Studio if consumers in the market for an entry-level to midrange Mac buy no Mac altogether because nothing meets their budget/needs.
But if most consumers are settling for what's available now then there's no need for an M1/M2 Pro desktop.
It's far more likely than we see a true high-end Mac desktop, like an iMac Pro or Mac Pro.
Mini, MBA M2, and MBP 13" M2 is plenty for the low-end demographic while offering plenty of incentive to step up to the midrange machines.