This seems like such a strange take considering Sony 1st Party is currently the biggest it's ever been.
I can't see Sony having any issue this gen pushing consoles.
I think they mean beyond. It also misses the fact that MS' first party just grew to gargantuan proportions. When you have Halo, Fallout, TES and Doom in your exclusivity portfolio, that kind of gets hard to compete with and MS is apparently not done just yet.