Not sure what you mean by "too weak to stream many channels". Do you mean the speed was too slow to stream from services like Netflix and Hulu? If you mean streaming to more than one device at a time then yes, satellite can not do that well at all.
We are lucky enough to have the Ultra plan but this is all we've used 23 days into refill date even with a fair amount of streaming at low definition and some SD. Mostly Netflix (love us some Peaky Blinders) and YouTube.