The problem for those individuals is that more and more companies provide their services solely on the net. No thrills airlines are a prime example of that, making bookings and managing them is done entirely online. Easyjet and Ryanair for example provide very little if any customer service over the phone or in person.
The job market as we know it has also altered, gone were the days of scrolling through the weekly newspaper for wanted ads or marching into the job centre and being sent to a bunch of interviews. It is becoming more and more digitalised each day, with many job centres managing CV analysis and interview invitation online. In addition to this, numerous vacancies only exist on a company's website.
The examples are countless, and normally we would say live and let live, but the trouble is that web illiteracy is estimated to cost the UK economy £3 billion each year. Luckily though, this figure is steadily decreasing each year. It is really hard to believe in today's day and age the lack of skills a large portion of the population have.