I think that's the only way to have an affordable next gen console while still offering an option for people who want more power.
Only one console means it'll either be expensive or basically a slightly better PS5 Pro.
Generations are dead basically. Inflation killed it.
Inflation is always happening though, you can't get away from it.
Releasing the Series S and X at the same time (essentially the base console and a Pro console) was a serious, arguably biggest, misstep by MS so why on earth would Sony replicate that?
Sony, historically, has always subsidised their main base next gen console and I can see the PS6 being no different. It makes the money back on game sales for the short term, then they ramp up production and soon after make a profit which is something MS cannot do due to Gamepass (they still subsidised it but they just eat the cost and as far as I am aware are still not making money on console hardware sales)
The Pro console is making a profit out of the gate, that's why it's so expensive in comparison, and it will be more profit than what they are making from base PS5 and slim consoles. And they make even more from the stand and drive (that drive and plate probably costs, what, $20? maybe less to make and they sell it for $80. You are paying a premium now so that the PS6 can be subsidised in my opinion. So I still reckon the PS6 will be around $500 (with drive, $450 without but drive purchasable. It may be a bit higher but I very much doubt it's $700 like many think it will be)