I would agree somewhat, but I would caution on these assumptions. The same things were essentially said before this gen, and yet we still got two consoles with significant differences in design and performance (i.e. PS4 and XB1), despite all the same circumstances appearing true.
My question earlier also referred more towards the "given constraints on power and price" part, and not that either MS or Sony would wait a year or not for better technology to become available. Even with the same technology options available and with both vendors designing their consoles with the same hw vendor (AMD), if say Sony designed a box for a given set of constraints on power and price, say they targeted a $399 launch price, and MS designed for a $499 price, I could very well see them both coming up with designs that were significantly different again in features and performance, despite launching in the same period.
Whilst I agree with the premise somewhat, I don't think we can use PS4 Pro uptake as a barometer for anything. After all a mid-gen console refresh in this manner is entirely unprecedented, and more importantly, there's a world of difference between a mid-gen refresh of the same hw and a next-generation console.
I do agree that there isn't really enough data to determine either way whether power is a real sticking point for early adopters of console hw at the start of a new generation. At the same time, however, this is irrelevant. The point isn't whether power is or isn't indeed a sticking point, rather is MS or Sony convinced that it is? As my suspicion, given the design of Scorpio and the way MS were willing to release a year later to get that level of performance, at least starts to suggest that MS think that power is important to the hardcore console gamer... and assuming they do, will this factor into their design goals for their next-box?