Warner Bros. movies are coming to HBO Max

Hi! Welcome to the Insider Advertising daily for December 4. I'm Lauren Johnson, a senior advertising reporter at Business Insider. Subscribe here to get this newsletter in your inbox every weekday. Send me feedback or tips at LJohnson@businessinsider.com.

Today's news: Warner Bros. deals a blow to movie theaters, the hottest adtech companies of 2020, and how Ben Thompson built email newsletter Stratechery.

In a major blow to US theaters, Warner Bros. announces that all of its movies in 2021 will debut on HBO Max the same day they arrive in cinemas

• Warner Bros. announced on Thursday that all of its 2021 theatrical movies would debut on HBO Max the same day they hit theaters.
• The movies include "The Suicide Squad," "Godzilla vs. Kong," and "The Matrix 4."
• The move is likely to boost HBO Max, which has struggled to convert HBO customers into subscribers.

Read the full story here.

The 18 hottest adtech companies of 2020

• The adtech industry in 2020 was hit hard by the economic downturn, looming changes to ad-targeting practices, and disruption to the TV industry.
• Still, startups like TVision and DoubleVerify raised money on the promise of solving big problems in the industry. And giants like The Trade Desk and Roku soared with changing consumer habits.
• Here are 18 firms, including those, that are best adapting to those challenges.

Read the full story here.

How Stratechery founder Ben Thompson built a one-person newsletter that generates about $3 million and became the envy of journalists

• Lara O'Reilly profiled Ben Thompson and his $120-a-year Stratechery newsletter that is beloved by tech executives and venture capitalists in Silicon Valley.
• By one estimate, Thompson's solo media enterprise is expected to generate more than $3 million in revenue this year.
• His success will be difficult for other journalists leaving their jobs to start newsletters to replicate.

Read the full story here.

More stories we're reading:

• The 6 ways to run ads on TikTok and what type of brands each is targeted toward, according to the company's North America product lead (Business Insider)
• First Twitter, now Spotify - why platforms are racing to copy the popular 'Stories' feature, and why they're missing the point (Business Insider)
• One of Google's leading AI researchers says she's been fired in retaliation for an email to other employees (Business Insider)
• Wired's Nicholas Thompson named CEO of The Atlantic (Axios)
• Walt Disney TV group to enact significant layoffs amid reorganization (Variety)
• How Spotify hopes to win the podcasting wars (CNBC)

Thanks for reading and see you on Monday! You can reach me in the meantime at LJohnson@businessinsider.com and subscribe to this daily email here.