Google's CEO Sundar Pichai confirmed for the first time Gmail joined search, Android, Maps, Chrome, YouTube and Google Play as products with more than 1 billion monthly active users, according to a Factset transcript of the Alphabet earnings conference call transcript Monday.
"We think that Google has taken the lead and there is no turning back given the recurring nature of its business model, the fact that the company has 7 products with over one billion users each, and the culture to fund and seek out large new markets," BGC Partners' Colin Gillis stated in an email.
Social network sentiment data shows Alphabet's market position in these areas is sustainable over the long-term. Google operates the No. 1 most talked about search engine, video site, and email program on social media, according to LikeFolio, a social media tracking firm.
"Google dominates a diverse and growing set of technologies with brands that are loved by consumers," said LikeFolio's Andy Swan. "Our data shows a consistency in both mention volume and positive sentiment across all Google-owned brands that leads us to believe Google's dominance is likely to continue for many years into the future."
Alphabet's core business of internet advertising through its search engine is still growing rapidly. The company's paid clicks number, a key metric that measures how often Google gets paid by advertisers, grew 31 percent year-over-year in the fourth quarter.
Google will capture $45.6 billion in search ad revenue in 2016, representing 55.6 percent of the search ad market worldwide, according to eMarketer. This is in contrast to Apple's iPhone which is slated to have its first year-over-year decline in sales during the March quarter, according to a forecast by CEO Tim Cook during the earnings call.
"Alphabet today looks impregnable driven by the structural growth of mobile advertising and its omnipresence in our lives," Chris Bailey of Financial Orbit, a U.K.-based investment research firm, wrote in an email.
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—CNBC's Giovanny Moreano and John Melloy contributed to this story.