Where's your source for this? Also at what price was the average copy being sold on PC? As well, when you say PC do you mean Microsoft Store or Steam, or GOG, or Epic Game Store, or Itch.io? You have to be much more specific.
Is your claim based on a global number, or a regional one? Is it based on a specific measure of time i.e Day 1 or first week sales launch-aligned? Is it based on units or revenue generated? As you can see, there's no reason to take your claim as factual until you can answer these questions, IMO.
Elden Ring did 44% on PC (Steam, mostly) while doing 40% on PS4/PS5. I wouldn't call that "dominating" for PC by any definition of the word. Games like Witcher 3 may have moved more units on PC, but that's because they were regularly put on flash sales for pennies on the dollar.
It's the reason why even in spite of that, actual software revenue is generally dominated by console and for these types of games, generally by PlayStation. Also I don't think saying the PC player base is bigger than PS5's is a flex; after all there are over a billion PCs in the world that can in theory play games depending on settings, and "only" 75 million PS5s.
Doesn't seem like that player base size advantage is manifesting in actual massive growth of sales revenue on PC compared to console, however.
It's a terrible take because you simply chose to ignore all the games which have been Day 1 across console & PC yet have still failed. It's like Microsoft thinking if they have Game Pass on a billion devices then subscriptions will increase to scale. They didn't. In fact, subscriptions stagnated despite them getting Game Pass on tons more devices.
Meanwhile, we have plenty of exclusive games that have managed to both outshine multiplats in terms of reception, and outperform many multiplats in terms of sales (or at least do as well as them despite being on only one platform). Just last year alone games like Stellar Blade and Astro Bot got tons of praise or, in Astro's case, dominated GOTY awards, while also selling into the millions. Both, despite being exclusives and despite being new IP (to many, Astro Bot is their first Astro game so they see it as a new IP).
Those games have also put in work attracting new customers to buy PS5s; that efficiency would've been cut in half if not more, if they were multiplats, especially being non-GAAS titles.
