(CEB|SHL Talent Measurement) A few years ago, a mobile phone was considered a rich man's toy. After all, these phones used to cost upwards of E400. Air time, the number of minutes spent actually using the phone, was the big expense, often running as high as EIOOO per month. Car phones were such a status symbol that people purchased artificial phones and aerials in order to give others the impression that they could afford such an extravagance. Now it seems almost everyone has a mobile phone. The cost of owning a mobile phone has dropped enough to allow this to happen. Not only do a number of companies offer free or reduced-price phones if you use their services, but some mobile phone services charge rates as low as two pence per minute. What is the main point of the above article?