Yes, console has weakened in the past 10 years but let's not act like it happened without reason, or that Microsoft (and more recently, Sony) didn't heavily contribute to it.
Don't pretend like Microsoft made all the right moves with XBO. They didn't. Hell they were making big mistakes near the end of 360. That's why they've seen Xbox console sales collapse recently.
Sony made mistakes with PS3 but then fixed most of them. If they never made those mistakes and continued with PS2 momentum-wise, PS3 would've probably hit 150 million sooner than the PS2 did. Sony started making mistakes with PS4 near the end of that gen, but some were in need of shifting to PS5.
Sony's biggest mistake now is they've been acting like Xbox is their only competition, and they've become too incumbent. They haven't really given much mind to what non-direct competitors have been achieving or pursuing, because they've been so focused on beating Xbox. Well, Xbox killed itself (as far as being a globally viable console platform's concerned) and Sony are getting drunk on wine & fat on food. They don't feel like they need to compete through innovating on things other platforms like Steam have been doing because....they aren't Xbox. So as far as Sony's concerned, if it's not Xbox, it's not a concern.
They're going to be proven quite wrong about that in due time, but yeah let's not pretend Microsoft & Sony haven't been complicit in some or many of the things that are affecting their own platforms today, for better or worst.