You are Assuming too much ... Overpriced ? ARM Console overpriced > I dont tink so. and their built in GPU has the potential and does not have to be the same chip but from e same family and design. True Apple are putting the soc into $1999 starting price Studio Mac , but they can make a locked version of it for games only ... The price of the SOC itself is not that high for them ...
I did not say RTX 3090 for tis does not need to be that performance .. RTX 3070 lie is enough but the key success for any Console is Watt/performance and today Apple is the winner !
Even their existing M1 Max chip is 432 mm2, while this chip will be at least double that size. That's quite large, and built on the latest leading edge 5nm process node, compared to all of today's CPUs, GPUs and console APUs built on "7/8/10nm" nodes, so it's undoubtedly going to be relatively expensive to make. By comparison, the PS5's chip is around 308 mm2, and the Series X's is 360 mm2, and those built on the more established and less expensive 7nm node.
If Microsoft or Sony felt there was benefit to putting this level of performance into a game console today, they could. I'm sure AMD could whip up a semi-custom APU design for them with 16-cores, 32 threads and RX 6900 XT-level graphics if they felt their was enough of a market for it. And we may even see a comparable level of performance (at least on the graphics side) when they decide to eventually launch "Pro" versions of the consoles. The efficiency of the M1 chips might be nice, but the existing consoles are drawing under 200 watts while gaming as it is, and even if it meant bumping that up to around 300 watts or so, that would be perfectly doable, and I doubt most of their target audience would care. At least not enough to be willing to pay significantly more for it. And by the time those updated consoles come out, AMD will have also moved on to producing chips on more efficient process nodes, so a wattage increase might not even be necessary.
Now certainly Apple is putting a huge markup on these systems, and theoretically they could sell them for a lot less, but I don't think they would be able (or willing) to put them into a mass-market game console. If they were entering into that market, they would be competing with long-established companies that are already offering a rather "Mac-like" user experience, and it's unclear what they would be able to bring to the table that isn't already covered. And without a big install-base, combined with a different architecture from what the big developers are currently designing around, they might struggle to get AAA games released on their platform that could actually make proper use of that hardware.
As for the Mac Studio starting at $2000, that's only for the M1 Max version, with half the CPU and GPU of the processor being talked about in the article. The M1 Ultra models start at $4000, but that's for a version with 25% of the GPU disabled. The version with all GPU cores enabled bumps the minimum starting price up to $5000.