Roku/Cell Phone Hotspt --- Alternative to Dish??

Pardon if dumb question. Could I substitute Roku via my cell phone hotspot for dish? I watch Lou Dobbs on Fox Business channel and local channels for local news/weather. Nothing else.

A friend said you get only highlights of Fox Business on Roku, but probably enough for me. Local news channels are important though.

I'm finding Dish a bit of a hassle.