whilst it has existed for 10 years, it's only comparatively recently that its become anything like reliable, and even now it's still not suitable for large data transfers, like downloading books or films, or watching catch up tv. it's also only generally complimentary in first class, many operators (including crosscontry, virgin, abellio and east midlands) still charge standard class passengers. in wales it's only available on GWR services and in the north of england there are vast areas with no coverage.