" If you want Google search, they’re going to shove Google Plus at you pretty hard, so the consumer’s forced to take the product they don’t want to get the product they want,” said Tim Wu, a professor at Columbia Law School who studies antitrust law and the Internet.

“That raises big questions under antitrust law,” he said. “It reminds me a little bit of Microsoft when Microsoft was fearing Netscape and decided to bend over backward and do anything possible to tie Explorer to their operating system.” Claire Miller for the New York Times

I don't think we should be too concerned. Yet. While there is no real alternative to YouTube, there are many excellent replacements for Google's other services.