Rail Resurgance Thanks to Wi-Fi?

Today, Glenn Fleishman posts about the broad coverage of Wi-Fi on trains and speculates,

Let’s see—drive by myself, get no work done, burn gas by the ton that costs a fortune, or, an inexpensive and comfortable trip with Internet access the whole way? I foresee big changes in commuter rail.

The last time I took a train from Seattle to Vancouver, I wound up spending just under $100 one way and yes, I got a nice seat with electricity. But it was a long trip (longer than driving thanks to track problems) and the Vancouver station was nowhere near where I wanted to be. I'd love for trains in the US to be a cost-effective way to move around, but it just seems like we haven't figured out how to make it work.