...yet. I fully expect Gmail and Search to decline in popularity, and with it Google's profitability and viability. Users are starting to revolt, and switch to alternatives like DDG. I don't know of any good Gmail alternatives yet, but the timing is really right for some startup to come along with a better email solution.

Google may appear an unstoppable juggernaut, but they most certainly are not. I think their business is very seriously threatened because of the type of business model they've chosen.