How much cheaper can apple go? The M4 Mini retails for 600 at apple.com, but frequently discounted to below 500 by others (apple too?).
Well, as low as they like really. The Apple TV with 128GB storage sells for $150 and (maybe with the processor brought up-to-date) would probably be capable of running MacOS & "personal productivity" stuff. I'm sure they could make a non-M-series Mini for, say $300, without taking a loss.
The question is, what would the market be for that and would the advantages of providing a cheap, attractive route into the Mac ecosystem (bringing new customers into Apple services, and creating future buyers of more expensive Macs) outweigh a few M-series Mini sales.
I think the rumoured A18 MacBook Air is a better idea for a "cheap Mac" though - these days, wanting a desktop is already a bit "specialist", and there's already proof-of-concept for a cheap, lower-spec Air in the form of "new" M1/M2 Airs already widely available at low prices.
The M4 Mini is already pretty affordable and compares well with competing mini-PCs (until you get to the point of bumping the internal storage or RAM which is q.v. ad nauseam in other threads and probably isn't gonna change while RAM and SSD prices are spiking the way they are right now).