Forever is a long time, and a safe bet for a topic title from the NY Times.
Google, was once the new kid on the block and rocketed to success. Nobody can dispute that it's been very successful. The market leader is a good one to attack, and Google's dominant position is being chipped at in many places. At first glance it seems invincible, but not so.
Google's Eric Schmidt said it saw Amazon as it's greatest competitor. Here's our thread on the topic "Google's Eric Schmidt Sees Amazon As Its Biggest Competitor In Search"
[webmasterworld.com] Amazon has a well known brand. How many search on Google, or go direct to Amazon!
Now there's Facebook having grown to a monster and is taking a great deal of ad revenue. Facebook's revenue from advertising was $3.59 billion, a 53% increase from the same quarter the previous year. Facebook Fourth Quarter and Full Year 2014 Results: Revenue Up 58pct
[webmasterworld.com] No need to search on Google as Facebook is a destination.
And now there's even Pinterest looking at taking away some of Google's sales opportunity with it considering a "buy" button.
[webmasterworld.com] You no longer need to search on Google if you can find it and buy it on Pinterest!
The problem for Google, though, is that its efforts arenít impossible to replicate. In less than five years, Facebook has also built an enviable ad-technology infrastructure, a huge sales team that aims to persuade marketers of the benefits of Facebook ads over TV ads, and new ways for brands to measure how well their ads are doing. These efforts have paid off quickly: In 2014 Facebook sold $11.5 billion in ads, most of them on mobile devices. That was up 65 percent over 2013. Google is facing a death by a thousand cuts
Any number of up-and-coming social services, including Pinterest and Snapchat, could also do well. So even if YouTube does very well, it will be only one of several services where marketers want to spend their money.NY Times: "Google, Mighty Now, But Not Forever" [nytimes.com]
Google's under attack from every quarter.