> a recent financial report suggested that Epic paid over $10 million to get Control as an Epic Game Store exclusive on PC, and it's possible the company has done the same to snag some of the more important releases of the year.
I mean, that's an ordinary business deal. Presumably, the $10m price was chosen because it's at a point where both parties believe they're benefiting from the deal.
The colloquial definition of an "offer you can't refuse" is one that would be a bad deal for you, but that you have to accept anyway because otherwise the counterparty would do something even worse to you.
That's not what a deal that someone "can't refuse" means -- that's just a deal, a mutually beneficial exchange, one of the foundations of society. "Can't refuse" generally means a threat of out-of-band (e.g. physical) harm if the deal isn't accepted.
The Epic Store is free (as in beer) to create an account on, and there's no hardware lock-in -- Steam, the Epic Store, and other platforms like GOG Galaxy/itch.io/whatever Ubisoft has can all be run on the same computer at the same time. The situation is completely different from Apple's app store.
Apparently it has two meanings. I've only heard it in terms of implying bodily harm, and I'm also in the US. Probably a phrase to be avoided if you don't mean bodily harm because there's a high risk of misinterpretation.