Last year, Google held 75.8 percent of the search ad market, bringing in $24.6 billion in revenue from search ads. That's expected to grow to $36.62 billion in revenue, or 80.2 percent of the market, in 2019. That all comes at the expense of Microsoft, Yelp and Verizon-owned AOL, which are expected to lose market share down to 6.6 percent, 5.8 percent...