More gain == more bandwidth, up to a certain point, so probably. Though they've probably considered this in their business model and throttled or charged appropriately. Like, do they just let high altitude customers in Denver get more bandwidth for free, or ?
Yes really. More gain means higher S/N ratio, therefore more bandwidth. Again, up to a certain point. Providers don't necessarily deliver an optimal antenna. See cheap home wifi routers for a real world example. Swapping their shit stock antennas for better clearly boosts bandwidth.
