Amazon.com Inc. said it closed the $8.5 billion acquisition of film studio Metro-Goldwyn-Mayer after regulators declined to challenge the deal, cementing the company’s biggest takeover in five years.

The closing, announced Thursday in a statement on the company’s website, marks the latest deal by a U.S. technology giant to win approval despite criticism that the companies have been able to gobble up smaller firms with little pushback from competition enforcers.

In the U.S., the deadline for the Federal Trade Commission to challenge the deal before the deal closed passed without the agency taking action.

Amazon agreed in May to buy MGM to deepen its library of streaming content, one of the perks of membership in the company’s Prime delivery service.

MGM, the studio behind the James Bond franchise, adds a back catalog of 25,000 hours that Amazon could divvy up between its Prime Video offering, or its free-to-stream, ad-supported IMDb TV. The takeover is Amazon’s biggest acquisition since it agreed to buy Whole Foods in 2017 for $13.7 billion.

About a month after the deal was announced, Biden named Khan to lead the FTC, putting a fierce critic of Amazon in charge of the agency.

Titled “Amazon’s Antitrust Paradox,” it traced how the online retailer came to control key infrastructure of the digital economy and how traditional antitrust analysis fails to consider the danger to competition posed by the company.