No, Khan was not right.
Microsoft didn't establish a dominant platform.
Microsoft didn't hold the titles as exclusives to muscle out competitors.
Microsoft didn't abuse a monopolistic position that stemmed from the acquisition.
Microsoft doesn't have a dominant platform, it's not a monopoly, and it couldn't muscle out anyone - it's competitors punched it in the throat and stole its lunch money.
The price hikes and lay offs are a result of multiple factors. The natural effects of consolidating businesses of that size means lay offs are inevitable, but Microsoft also added AI on top, resulting in massive waves of layoffs as it seeks to, effectively, replace its human workers with digital agents. The price hikes are a result of Microsoft failing to meet its targets with services like Game Pass, and the resulting pivots away from trying to outspend its competitors. But, there's also inflation, tariffs, and general economic uncertainly stemming from an American trade war that makes no financial sense to anyone, giving every platform holder carte blanche to raise their prices to whatever the fuck they feel like.
The regulators predicted the end of the gaming industry, the collapse of Sony, and a complete monopoly held by Microsoft. Today, we're talking about if Xbox is even going to exist in five years.