Skype => MS Teams

The technology from Skype is already used in MS Teams, but branding was separate.
On the other side, Skype was also to "proxy" to regular phone lines, that will likely be discontinued. 

"Free" is not really free, someone needs to pay expenses. 
"When you don't see what is the product, then you are the product"

But likely not much can be earned on Skype advertising to justify it... 

The next chapter: Moving from Skype to Microsoft Teams   | Microsoft 365 Blog

In order to streamline ... free consumer communications offerings ...will be retiring Skype in May 2025 to focus on Microsoft Teams (free)...

 Microsoft is shutting down Skype in favor of Teams | The Verge

AI book: The New Digital Age by Eric Schmidt

 Ex Google CEO: AI Can Create Deadly Viruses! If We See This, We Must Turn Off AI! - YouTube

Eric Schmidt is the former CEO of Google and co-founder of Schmidt Sciences. He is also the author of bestselling books such as, ‘The New Digital Age’ and ‘Genesis: Artificial Intelligence, Hope, and the Human Spirit’.

The New Digital Age: Reshaping the Future of People, Nations and Business: Schmidt, Eric, Cohen, Jared: 9780307957139: Amazon.com: Books

Jared Cohen is the founder and CEO of Jigsaw at Alphabet Inc. He also serves as an Adjunct Senior Fellow at the Council on Foreign Relations. Prior to Alphabet, he was Google’s first Director of Ideas and chief advisor to Google's executive chairman Eric Schmidt.

Eric Schmidt - Wikipedia