Or you can not base your business on the fickleness of your phone company's /ISP algorithms. Google is a much as 90% of referrals for many websites.
Answer this: Are you sure that Google updates their search algorithm independent of revenue impact? I remember reading from FTC's investigation that Google kept changing their "independent" SE rater's criteria until it eventually met Google's own goals. You think Singhal didn't know what changes hurt Google's revenue (ad clicks plus sites forced to advertise)?