That's not quite true.
DishNet buys bandwidth from both HughesNet satellites (including the Gen4 "Jupiter") and from Wildblue/Exede which includes ViaSat-1.
Which satellite you get service from with DishNet depends on where you live.
You get faster speed, unlimited usage from midnight-5am if you buy directly from WB/Exede. Buying directly from HughesNet also has some perks.
The only advantage you get buying through DishNet is a $5/month discount if you also bundle it with a Dish TV package.
Compare all 3 options....buy directly from Wildblue/Exede, from HughesNet or from DishNet..but just remember, DishNet does not own nor operate any of the satellites that provide internet services from the Jupiter/Gen4 or ViaSat-1 satellites..they just lease and resell bandwidth from Wildblue/Exede and HughesNet.
Dish (Echostar) does own HughesNet.