Amazing to me that airlines were able to beat Amtrak to the punch on Wifi, considering what must be a very wide gap in technical difficulty.
Likewise, the other decent line I've ridden, the Cascades line (www.amtrakcascades.com/) is largely supported by & accountable to the Washington and Oregon state governments.
Amtrak is a decades-old failed experiment. Here's to hoping private & state-run high-speed passenger rail authorities show the way forward. My money is on Texas: http://www.thsrtc.com/