Monopoly implies there are no other significant players in the space, and so the monopoly's actions set the terms. Sony, Microsoft, Nintendo, Epic, Electronic Arts, and about 15 other franchises beg to differ.
This is the opposite of monopoly - the first recent competition to Playstation/Xbox/Switch *without* draconian hardware-based copy protection. It's a real alternative in an environment that badly needs alternatives.
They're competing on innovation and quality, not copy protection and lock-in, and I hope it sets the trend.
The new space is...
controllers? They sold one, it tanked.
Steam machines? Yeah, they tried that too.
VR goggles? Their old ones failed.
If "aggressive, competitive terms" are "curated experiences with open hardware" - sign me up.
I still don't see a monopoly. I know for a fact being on Steam isn't exclusive, simply because I have Vampire Survivors (fantastic game BTW) on both ios and Steam.
So far as I can tell, of the top 10 biggest selling games of the last decade - Valve has 2, and has made less than 10% of the gross income. Maybe they make it up with the long tail and extensive library - but "monopoly" isn't what that is.
30% may or may not be high - but it's what Apple and Xbox also charge last I checked. If devs don't think that's worth it - they are not required to use any of the above. We live in a world where distribution of software is easier than ever, for the PC anyway - ios and xbox not so much. Point being, Valve is easily bypassed, if you think their percentage is high. I'm not so sure they're such a bad bargain, but I'm a consumer not a game dev.
Concerns of what Valve might do if they suddenly turn evil are reasonable, but not really actionable at the moment? I mean - I boycott Microsoft, Sony, and Nintendo (having been their customers extensively), and Google and Apple are on very shaky ground. If Valve goes bad I guess I'd do the same - but I thunk I will worry about that when it happens.
Right now, Valve looks like the knight in shining armor - open hardware, customer centric, innovation. Part of that is because their competition is so heinous, to be sure. But part of it seems to honestly be a different attitude toward both customers and devs. If someone *better* comes down the pipe let me know.