I believe this is the key point. Your only console is going to be your main console. I would never say my Switch is my main console because I primarily play games on PC. I still buy many games for Switch. The usefulness of such a data point seems limited to just internet dick wringing.
Yeah, but it makes sense to only own a Playstation much more than the other way round.
90% of games on Xbox are available on PS as well.
Vice versa, it's probably closer to 75% of PS games on Xbox as well.
With so much crossover, it doesn't make much sense to buy both (for the average gamer) and with Sony's better exclusive library and output, it's a given that Playstation has the upper hand.
But that has always been the case.