As Google faces an antitrust probe from European regulators, some analysts are questioning whether the California tech giant's dominance has already peaked.
While Google remains one of the world's biggest companies with overwhelming dominance of internet searches, its prospects are less rosy in a tech landscape rapidly shifting to mobile devices and social media, say some industry watchers.
Debate heated up last year after a blog post titled "Peak Google" from technology analyst and consultant Ben Thompson, who argued that Google is losing momentum.
Thompson said Google may be in the same boat as IBM in the 1980s and Microsoft around 2000 - "a hugely profitable company bestride the tech industry that at the moment seems infallible but that history will show to have peaked in dominance and relevancy."
Google has for years been the leader in internet search and has turned advertising linked to those searches into a highly lucrative business.