I don’t think this is just wishful thinking in my opinion. It’s exactly what I think. PS5 Pro is an optional upgrade for enthusiasts. The brand and companies success does not depend on it. I even think the PS6 will be cheaper than PS5 Pro, because it will look like bargain now. And the success of Playstation as a whole depends on how many baseline units are sold. I don’t think that even Sony can afford 700 Dollars (without disc drive) for the PS6.
But off course it depends on future economics situation in the word (Yen conversion) and if there is good competition from Xbox. At that point Microsoft probably has the next generation Xbox Infinite on the market and then it would be tough for Sony not to fight on the price. Probably a wishful thinking on my part too, but also not too unrealistic! Right?^^