People were (wisely) waiting for pro. Maybe MS wins again when Scorpio comes out.
I really did not think about this until I saw your post, but I am sure that MS was looking at Sony's messaging, release strategy and sales figures of the PRO with great interest. It really is the first time a company have tried this and will change the way consoles are released going forward. I personally think Sony did a shitty job with the PRO and they should of had a lot more older games with Pro features and more games that actually took real advantage of it. If the PRO turns out to be a good win, then to your point does potentially mean that Scorpio will be fine as well.
I was one of the people that went with the PRO. For me, it just makes sense and the price difference between the two units, without taking the crazy sales going on it is well worth it. Yes, I wish there was a lot more software and I wish some the PS4 PRO enhanced games ran better (FF I am looking at you), you can definitely see the potential in the system and I am looking forward to devs getting to grips with it and really showing what it can do.