Kaspersky CEO Eugene Kaspersky has dredged up a familiar argument from Microsoft’s terrible antitrust period. Sadly, he may have a point.

“That’s it. I’ve had enough!” he writes in his personal blog. “We think that Microsoft has been using its dominating position in the market of operating systems to create competitive advantages for its own product. The company is foisting its Defender on the user, which isn’t beneficial from the point of view of protection of a computer against cyberattacks. The company is also creating obstacles for companies to access the market, and infringes upon the interests of independent developers of security products.”